title: Try Google Cloud Messaging Always Fail
body: <p>I started with this link</p>
  
  <p><a href="https://developers.google.com/cloud-messaging/android/start" rel="nofollow">https://developers.google.com/cloud-messaging/android/start</a></p>
  
  <p>I have problem on step 4. I can show <em>"Token retrieved and sent to server! You can now use gcmsender to send downstream messages to this app"</em> on the device.</p>
  
  <p>But when I run <strong>.\gradlew.bat run -Pmsg=""</strong></p>
  
  <p>It always give me <strong>Task 'run' not found in root project</strong></p>
  
  <p>What am I missing here?</p>