title: GCM registration is not ready with auth credentials in ios9
body: <p>Hi i am using GCM for push notification, it is working fine in <code>iOS8</code> but in <code>iOS9</code> it is giving error "GCM registration is not ready with auth credentials in <code>iOS9</code>" and could not connect to GCM: The operation couldn’t be completed. (com.google.gcm error 501.)</p>