added comments

mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java

@@ -133,6 +133,9 @@ public class IITC_WebViewClient extends WebViewClient {
         handler.proceed();
     };
 
+    /**
+     * this method is called automatically when the Google login form is opened.
+     */
     @Override
     public void onReceivedLoginRequest(WebView view, String realm, String account, String args) {
         ((IITC_Mobile) context).onReceivedLoginRequest(this, view, realm, account, args);