title: Push Notification GCM/APNS group "big view" only display 5 messages(then display xx new messages)
body: <p>I am looking to see how to make the "Big View" so that the push notifications group messages from 1 person together, and just display e.g. the latest 5, and show e.g. 9 new messages,Like on Whatsapp/Facebook messenger </p>
  
  <p>How would i do that on "big view"? Any documentation that has guide for it? 
  For both Android and IOS.</p>