Add Useful links section

android/customtabs.html

@@ -667,6 +667,12 @@ serviceIntent.setPackage(CUSTOM_TAB_PACKAGE_NAME);
 context.bindService(serviceIntent, mServiceConnection,
                     Context.BIND_AUTO_CREATE | Context.BIND_WAIVE_PRIORITY);    
 </pre>
+<h2 id="LINKS">Useful Links</h2>
+<ul>
+    <li><a href="https://github.com/GoogleChrome/custom-tabs-client">Github Demo</a></li>
+    <li><a href="http://stackoverflow.com/questions/tagged/chrome-custom-tabs">Chrome Custom Tabs on StackOverflow</a></li>
+</ul>
+
 <h2 id="FAQ">FAQ</h2>
 
 <ul>