added link to PHPoAuthLib

Author: staabm

source/index.html

@@ -51,7 +51,7 @@ <h3>URL Map <i class="icon-map-marker pull-right"></i></h3>
         </div>
         <div class="tool well well-small span6">
             <h3>OAuth <i class="icon-lock pull-right"></i></h3>
-            <p>Provides experimental OAuth authentication for subsequent middlewares. Leverages <a href="">PHPoAuthLib</a>.</p>
+            <p>Provides experimental OAuth authentication for subsequent middlewares. Leverages <a href="https://github.com/Lusitanian/PHPoAuthLib">PHPoAuthLib</a>.</p>
             <p><a class="btn" href="https://github.com/stackphp/oauth">Learn More</a></p>
         </div>
     </div>