title: Wp7 push notification to launch my app
body: <p>As far as I know, Ios and Android gcm are able to open an application when a push notification event arrives.
  For wp7, I only find samples on how to update tiles or display a message. But I need to display a bitmap in fullscreen.
  Is there a way to open my app when I send a push notification ?</p>
  
  <p>Thanks in advance for your help.</p>