title: How to implement FCM push notification in ejabberd XMPP server
body: <p>I have implemented apns notification using ejabberd, for apns we need to use mod_apns.erl file only.
  I want to implement push notification in android device using FCM as GCM is deprecated. previously mod_gcm.erl file available for GCM push notification.</p>
  
  <p>Please help me to integrate <strong>FCM push notification in ejabberd</strong>.</p>
  
  <p><strong>Installed Ejabberd Version: 16.09</strong></p>