title: Retrieve "content" of GCM message Intent.
body: <p>This is how the message is being sent from the server: </p>
  
  <pre><code>        //Queue Android GCM Notification
          _pushService.QueueNotification(NotificationFactory.AndroidGcm()
              .ForDeviceRegistrationId(device)
              .WithCollapseKey("LATEST")
              .WithJson("{\"alert\":\"" + message + "\",\"badge\":\"7\"}"));
  </code></pre>
  
  <p>I receive the Intent, how do I get the message? I tried: </p>
  
  <pre><code>    Log.d(TAG, "" + intent.getStringExtra("{\"alert\":\""));
      Log.d(TAG, "" + intent.getStringExtra("LATEST"));
      Log.d(TAG, "" + intent.getStringExtra("data"));
  </code></pre>
  
  <p>All are null, whats the key for the message text value?</p>