title: How can I handle invitationId from the notification is status bar
body: <p>How can I manage the invitation from the status bar?
  I explain: 
  if I override the onInivitationListener, I can get the information from the bundle, but when I don't run the app, and the invitation comes from the status bar autamatically, so I don't have an onActivityResult where I can get the bundle.</p>
  
  <p>I can't use getInvitationId comes from BaseGameActivity, becouse it doesn't works.</p>
  
  <p>Any ideas?</p>
  
  <p>Bye.</p>