FCMWrapper

Register APNs token to your FCM. create/remove topic And send Message to fcm Token

This will help to register exsisting apns user token to register with google fcm , later you can use this to send notifcation to user with the firebase help.

1. get your legecy key and sender id by registering at firebase
2. run demo project.
3. call required method according to need in view controller