diff --git a/README.md b/README.md
index 451f1a5..2fbbebb 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,43 @@
 # Pym.js
 
+## BBC-specific modifications
+* We added the ability to init a pym Parent with a sourcedoc attribute rather than an iFrame URL.
+* We added a way of accessing host information:
+ 
+1. When creating pym Parent, pass a `config` property with whatever you like (e.g. host URL, cookies, etc)
+2. When creating pym Child, pass a `connectedCallback` function, which is invoked once a connection has been made with the pym Parent.
+3. Anything inside the callback can safely call pym Child.getHostInformation() - this provides a nice easy way for pym Childs to access host information.
+
+Example:
+
+```js
+var myConf = {
+    hostInformation: {
+        onBbcDomain: true,
+        category:    'news'
+    },
+    applicationHtml: coreContentContainer.innerHTML
+};
+var pymParent = new pym.Parent(iframeUid, iframeUrl, {config: myConf});
+```
+
+...and the child:
+
+```js
+new pym.Child({
+    polling: 100,
+    connectedCallback: function downloadApplication(self) {
+        console.log(self.getHostInformation().hostInformation);
+    }
+});
+```
+
+---
+
+The original README is below.
+
+---
+
 ## About
 
 Using iframes in a responsive page can be frustrating. It’s easy enough to make an iframe’s width span 100% of its container, but sizing its height is tricky — especially if the content of the iframe changes height depending on page width (for example, because of text wrapping or media queries) or events within the iframe.
diff --git a/dist/pym.js b/dist/pym.js
index 161cc8c..6888607 100644
--- a/dist/pym.js
+++ b/dist/pym.js
@@ -1,4 +1,4 @@
-/*! pym.js - v0.4.6 - 2016-05-18 */
+/*! pym.js - v0.4.6 - 2016-07-23 */
 /*
 * Pym.js is library that resizes an iframe based on the width of the parent and the resulting height of the child.
 * Check out the docs at http://blog.apps.npr.org/pym.js/ or the readme at README.md for usage.
@@ -209,7 +209,7 @@
         * @method _constructIframe
         */
         this._srcdocIframe = function() {
-            
+
             this.iframe = this.el.getElementsByTagName('iframe')[0];
 
             // Set some attributes to this proto-iframe.
@@ -381,6 +381,12 @@
             this.settings[key] = config[key];
         }
 
+        this._sendHostInfo = function() {
+            this.sendMessage('config', JSON.stringify(this.settings.config));
+        };
+
+        this.onMessage('loaded', this._sendHostInfo);
+
         // Bind required message handlers
         this.onMessage('height', this._onHeightMessage);
         this.onMessage('navigateTo', this._onNavigateToMessage);
@@ -595,14 +601,28 @@
             this.settings[key] = config[key];
         }
 
-        // Set up a listener to handle any incoming messages.
-        window.addEventListener('message', this._processMessage, false);
+        this._cacheHostInfo = function(config) {
+            this.config = JSON.parse(config);
+            if (this.settings.connectedCallback) {
+                this.settings.connectedCallback(this);
+            }
+        };
+
+        this.getHostInformation = function() {
+            return this.config;
+        };
+
+        this.onMessage('config', this._cacheHostInfo);
+        this.sendMessage('loaded', true);
 
         // If there's a callback function, call it.
         if (this.settings.renderCallback) {
             this.settings.renderCallback(width);
         }
 
+        // Set up a listener to handle any incoming messages.
+        window.addEventListener('message', this._processMessage, false);
+
         // Send the initial height to the parent.
         this.sendHeight();
 
diff --git a/dist/pym.min.js b/dist/pym.min.js
index 0a3f8a8..4d96d98 100644
--- a/dist/pym.min.js
+++ b/dist/pym.min.js
@@ -1,2 +1,2 @@
-/*! pym.js - v0.4.6 - 2016-05-18 */
-!function(a){"function"==typeof define&&define.amd?define(a):"undefined"!=typeof module&&module.exports?module.exports=a():window.pym=a.call(this)}(function(){var a="xPYMx",b={},c=function(a){var b=new RegExp("[\\?&]"+a.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]")+"=([^&#]*)"),c=b.exec(location.search);return null===c?"":decodeURIComponent(c[1].replace(/\+/g," "))},d=function(a,b){return"*"===b.xdomain||a.origin.match(new RegExp(b.xdomain+"$"))?!0:void 0},e=function(b,c,d){var e=["pym",b,c,d];return e.join(a)},f=function(b){var c=["pym",b,"(\\S+)","(.+)"];return new RegExp("^"+c.join(a)+"$")},g=function(){for(var a=document.querySelectorAll("[data-pym-src]:not([data-pym-auto-initialized])"),c=a.length,d=0;c>d;++d){var e=a[d];e.setAttribute("data-pym-auto-initialized",""),""===e.id&&(e.id="pym-"+d);var f=e.getAttribute("data-pym-src"),g=e.getAttribute("data-pym-xdomain"),h={};g&&(h.xdomain=g),new b.Parent(e.id,f,h)}};return b.Parent=function(a,b,c){this.id=a,this.url=b,this.el=document.getElementById(a),this.iframe=null,this.settings={xdomain:"*"},this.messageRegex=f(this.id),this.messageHandlers={},c=c||{},this._constructIframe=function(){var a=this.el.offsetWidth.toString();this.iframe=document.createElement("iframe");var b="",c=this.url.indexOf("#");c>-1&&(b=this.url.substring(c,this.url.length),this.url=this.url.substring(0,c)),this.url.indexOf("?")<0?this.url+="?":this.url+="&",this.iframe.src=this.url+"initialWidth="+a+"&childId="+this.id+"&parentUrl="+encodeURIComponent(window.location.href)+b,this.iframe.setAttribute("width","100%"),this.iframe.setAttribute("scrolling","no"),this.iframe.setAttribute("marginheight","0"),this.iframe.setAttribute("frameborder","0"),this.settings.title&&this.iframe.setAttribute("title",this.settings.title),this.el.appendChild(this.iframe),window.addEventListener("resize",this._onResize)},this._srcdocIframe=function(){this.iframe=this.el.getElementsByTagName("iframe")[0],this.iframe.setAttribute("width","100%"),this.iframe.setAttribute("scrolling","no"),this.iframe.setAttribute("marginheight","0"),this.iframe.setAttribute("frameborder","0"),this.settings.title&&this.iframe.setAttribute("title",this.settings.title),window.addEventListener("resize",this._onResize)},this._onResize=function(){this.sendWidth()}.bind(this),this._fire=function(a,b){if(a in this.messageHandlers)for(var c=0;c<this.messageHandlers[a].length;c++)this.messageHandlers[a][c].call(this,b)},this.remove=function(){window.removeEventListener("message",this._processMessage),window.removeEventListener("resize",this._onResize),this.el.removeChild(this.iframe)},this._processMessage=function(a){if(d(a,this.settings)&&"string"==typeof a.data){var b=a.data.match(this.messageRegex);if(!b||3!==b.length)return!1;var c=b[1],e=b[2];this._fire(c,e)}}.bind(this),this._onHeightMessage=function(a){var b=parseInt(a);this.iframe.setAttribute("height",b+"px")},this._onNavigateToMessage=function(a){document.location.href=a},this.onMessage=function(a,b){a in this.messageHandlers||(this.messageHandlers[a]=[]),this.messageHandlers[a].push(b)},this.sendMessage=function(a,b){this.el.getElementsByTagName("iframe")[0].contentWindow.postMessage(e(this.id,a,b),"*")},this.sendWidth=function(){var a=this.el.offsetWidth.toString();this.sendMessage("width",a)};for(var g in c)this.settings[g]=c[g];return this.onMessage("height",this._onHeightMessage),this.onMessage("navigateTo",this._onNavigateToMessage),window.addEventListener("message",this._processMessage,!1),"undefined"==typeof c.srcdoc||c.srcdoc===!1?this._constructIframe():this._srcdocIframe(),this},b.Child=function(b){this.parentWidth=null,this.id=null,this.parentUrl=null,this.settings={renderCallback:null,xdomain:"*",polling:0},this.messageRegex=null,this.messageHandlers={},b=b||{},this.onMessage=function(a,b){a in this.messageHandlers||(this.messageHandlers[a]=[]),this.messageHandlers[a].push(b)},this._fire=function(a,b){if(a in this.messageHandlers)for(var c=0;c<this.messageHandlers[a].length;c++)this.messageHandlers[a][c].call(this,b)},this._processMessage=function(a){if(d(a,this.settings)&&"string"==typeof a.data){var b=a.data.match(this.messageRegex);if(b&&3===b.length){var c=b[1],e=b[2];this._fire(c,e)}}}.bind(this),this._onWidthMessage=function(a){var b=parseInt(a);b!==this.parentWidth&&(this.parentWidth=b,this.settings.renderCallback&&this.settings.renderCallback(b),this.sendHeight())},this.sendMessage=function(a,b){window.parent.postMessage(e(this.id,a,b),"*")},this.sendHeight=function(){var a=document.getElementsByTagName("body")[0].offsetHeight.toString();this.sendMessage("height",a)}.bind(this),this.scrollParentTo=function(a){this.sendMessage("navigateTo","#"+a)},this.navigateParentTo=function(a){this.sendMessage("navigateTo",a)},this.id=c("childId")||b.id,this.messageRegex=new RegExp("^pym"+a+this.id+a+"(\\S+)"+a+"(.+)$");var f=parseInt(c("initialWidth"))||b.width;this.parentUrl=c("parentUrl")||b.url,this.onMessage("width",this._onWidthMessage);for(var g in b)this.settings[g]=b[g];return window.addEventListener("message",this._processMessage,!1),this.settings.renderCallback&&this.settings.renderCallback(f),this.sendHeight(),this.settings.polling&&window.setInterval(this.sendHeight,this.settings.polling),this},g(),b});
\ No newline at end of file
+/*! pym.js - v0.4.6 - 2016-07-23 */
+!function(a){"function"==typeof define&&define.amd?define(a):"undefined"!=typeof module&&module.exports?module.exports=a():window.pym=a.call(this)}(function(){var a="xPYMx",b={},c=function(a){var b=new RegExp("[\\?&]"+a.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]")+"=([^&#]*)"),c=b.exec(location.search);return null===c?"":decodeURIComponent(c[1].replace(/\+/g," "))},d=function(a,b){if("*"===b.xdomain||a.origin.match(new RegExp(b.xdomain+"$")))return!0},e=function(b,c,d){var e=["pym",b,c,d];return e.join(a)},f=function(b){var c=["pym",b,"(\\S+)","(.+)"];return new RegExp("^"+c.join(a)+"$")},g=function(){for(var a=document.querySelectorAll("[data-pym-src]:not([data-pym-auto-initialized])"),c=a.length,d=0;d<c;++d){var e=a[d];e.setAttribute("data-pym-auto-initialized",""),""===e.id&&(e.id="pym-"+d);var f=e.getAttribute("data-pym-src"),g=e.getAttribute("data-pym-xdomain"),h={};g&&(h.xdomain=g),new b.Parent(e.id,f,h)}};return b.Parent=function(a,b,c){this.id=a,this.url=b,this.el=document.getElementById(a),this.iframe=null,this.settings={xdomain:"*"},this.messageRegex=f(this.id),this.messageHandlers={},c=c||{},this._constructIframe=function(){var a=this.el.offsetWidth.toString();this.iframe=document.createElement("iframe");var b="",c=this.url.indexOf("#");c>-1&&(b=this.url.substring(c,this.url.length),this.url=this.url.substring(0,c)),this.url.indexOf("?")<0?this.url+="?":this.url+="&",this.iframe.src=this.url+"initialWidth="+a+"&childId="+this.id+"&parentUrl="+encodeURIComponent(window.location.href)+b,this.iframe.setAttribute("width","100%"),this.iframe.setAttribute("scrolling","no"),this.iframe.setAttribute("marginheight","0"),this.iframe.setAttribute("frameborder","0"),this.settings.title&&this.iframe.setAttribute("title",this.settings.title),this.el.appendChild(this.iframe),window.addEventListener("resize",this._onResize)},this._srcdocIframe=function(){this.iframe=this.el.getElementsByTagName("iframe")[0],this.iframe.setAttribute("width","100%"),this.iframe.setAttribute("scrolling","no"),this.iframe.setAttribute("marginheight","0"),this.iframe.setAttribute("frameborder","0"),this.settings.title&&this.iframe.setAttribute("title",this.settings.title),window.addEventListener("resize",this._onResize)},this._onResize=function(){this.sendWidth()}.bind(this),this._fire=function(a,b){if(a in this.messageHandlers)for(var c=0;c<this.messageHandlers[a].length;c++)this.messageHandlers[a][c].call(this,b)},this.remove=function(){window.removeEventListener("message",this._processMessage),window.removeEventListener("resize",this._onResize),this.el.removeChild(this.iframe)},this._processMessage=function(a){if(d(a,this.settings)&&"string"==typeof a.data){var b=a.data.match(this.messageRegex);if(!b||3!==b.length)return!1;var c=b[1],e=b[2];this._fire(c,e)}}.bind(this),this._onHeightMessage=function(a){var b=parseInt(a);this.iframe.setAttribute("height",b+"px")},this._onNavigateToMessage=function(a){document.location.href=a},this.onMessage=function(a,b){a in this.messageHandlers||(this.messageHandlers[a]=[]),this.messageHandlers[a].push(b)},this.sendMessage=function(a,b){this.el.getElementsByTagName("iframe")[0].contentWindow.postMessage(e(this.id,a,b),"*")},this.sendWidth=function(){var a=this.el.offsetWidth.toString();this.sendMessage("width",a)};for(var g in c)this.settings[g]=c[g];return this._sendHostInfo=function(){this.sendMessage("config",JSON.stringify(this.settings.config))},this.onMessage("loaded",this._sendHostInfo),this.onMessage("height",this._onHeightMessage),this.onMessage("navigateTo",this._onNavigateToMessage),window.addEventListener("message",this._processMessage,!1),"undefined"==typeof c.srcdoc||c.srcdoc===!1?this._constructIframe():this._srcdocIframe(),this},b.Child=function(b){this.parentWidth=null,this.id=null,this.parentUrl=null,this.settings={renderCallback:null,xdomain:"*",polling:0},this.messageRegex=null,this.messageHandlers={},b=b||{},this.onMessage=function(a,b){a in this.messageHandlers||(this.messageHandlers[a]=[]),this.messageHandlers[a].push(b)},this._fire=function(a,b){if(a in this.messageHandlers)for(var c=0;c<this.messageHandlers[a].length;c++)this.messageHandlers[a][c].call(this,b)},this._processMessage=function(a){if(d(a,this.settings)&&"string"==typeof a.data){var b=a.data.match(this.messageRegex);if(b&&3===b.length){var c=b[1],e=b[2];this._fire(c,e)}}}.bind(this),this._onWidthMessage=function(a){var b=parseInt(a);b!==this.parentWidth&&(this.parentWidth=b,this.settings.renderCallback&&this.settings.renderCallback(b),this.sendHeight())},this.sendMessage=function(a,b){window.parent.postMessage(e(this.id,a,b),"*")},this.sendHeight=function(){var a=document.getElementsByTagName("body")[0].offsetHeight.toString();this.sendMessage("height",a)}.bind(this),this.scrollParentTo=function(a){this.sendMessage("navigateTo","#"+a)},this.navigateParentTo=function(a){this.sendMessage("navigateTo",a)},this.id=c("childId")||b.id,this.messageRegex=new RegExp("^pym"+a+this.id+a+"(\\S+)"+a+"(.+)$");var f=parseInt(c("initialWidth"))||b.width;this.parentUrl=c("parentUrl")||b.url,this.onMessage("width",this._onWidthMessage);for(var g in b)this.settings[g]=b[g];return this._cacheHostInfo=function(a){this.config=JSON.parse(a),this.settings.connectedCallback&&this.settings.connectedCallback(this)},this.getHostInformation=function(){return this.config},this.onMessage("config",this._cacheHostInfo),this.sendMessage("loaded",!0),this.settings.renderCallback&&this.settings.renderCallback(f),window.addEventListener("message",this._processMessage,!1),this.sendHeight(),this.settings.polling&&window.setInterval(this.sendHeight,this.settings.polling),this},g(),b});
\ No newline at end of file
diff --git a/package.json b/package.json
index 5e9fa96..a6bccca 100644
--- a/package.json
+++ b/package.json
@@ -27,10 +27,11 @@
     "url": "https://github.com/nprapps/pym.js/issues"
   },
   "devDependencies": {
-    "grunt-contrib-concat": "^0.5.0",
-    "grunt-contrib-jshint": "~0.10.0",
-    "grunt-contrib-uglify": "^0.6.0",
-    "grunt-contrib-watch": "~0.6.1",
-    "grunt-jsdoc": "~0.5.6"
+    "grunt": ">=0.4.5 <1.0.0",
+    "grunt-contrib-concat": "^1.0.1",
+    "grunt-contrib-jshint": "~1.0.0",
+    "grunt-contrib-uglify": "^2.0.0",
+    "grunt-contrib-watch": "~1.0.0",
+    "grunt-jsdoc": "~2.1.0"
   }
 }
diff --git a/src/pym.js b/src/pym.js
index b977c74..30ee39f 100644
--- a/src/pym.js
+++ b/src/pym.js
@@ -208,7 +208,7 @@
         * @method _constructIframe
         */
         this._srcdocIframe = function() {
-            
+
             this.iframe = this.el.getElementsByTagName('iframe')[0];
 
             // Set some attributes to this proto-iframe.
@@ -380,6 +380,12 @@
             this.settings[key] = config[key];
         }
 
+        this._sendHostInfo = function() {
+            this.sendMessage('config', JSON.stringify(this.settings.config));
+        };
+
+        this.onMessage('loaded', this._sendHostInfo);
+
         // Bind required message handlers
         this.onMessage('height', this._onHeightMessage);
         this.onMessage('navigateTo', this._onNavigateToMessage);
@@ -594,14 +600,28 @@
             this.settings[key] = config[key];
         }
 
-        // Set up a listener to handle any incoming messages.
-        window.addEventListener('message', this._processMessage, false);
+        this._cacheHostInfo = function(config) {
+            this.config = JSON.parse(config);
+            if (this.settings.connectedCallback) {
+                this.settings.connectedCallback(this);
+            }
+        };
+
+        this.getHostInformation = function() {
+            return this.config;
+        };
+
+        this.onMessage('config', this._cacheHostInfo);
+        this.sendMessage('loaded', true);
 
         // If there's a callback function, call it.
         if (this.settings.renderCallback) {
             this.settings.renderCallback(width);
         }
 
+        // Set up a listener to handle any incoming messages.
+        window.addEventListener('message', this._processMessage, false);
+
         // Send the initial height to the parent.
         this.sendHeight();