diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..59b725d
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,3 @@
+
+.git
+.idea
diff --git a/android/build.gradle b/android/build.gradle
index a28f0dd..fb05bdc 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -11,13 +11,17 @@ buildscript {
 
 apply plugin: 'com.android.library'
 
+def safeExtGet(prop, fallback) {
+    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
+}
+
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion safeExtGet('compileSdkVersion', 23)
+    buildToolsVersion safeExtGet('buildToolsVersion', "23.0.1")
 
     defaultConfig {
-        minSdkVersion 16
-        targetSdkVersion 22
+        minSdkVersion safeExtGet('minSdkVersion', 16)
+        targetSdkVersion safeExtGet('targetSdkVersion', 22)
         versionCode 1
         versionName "1.0"
     }
@@ -31,6 +35,6 @@ repositories {
 }
 
 dependencies {
-    compile 'com.facebook.react:react-native:+'
+    compile 'com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}'
 }
-  
\ No newline at end of file
+