Add sender identifier to configuration (stable-2.13)

Allow a client to retrieve the FCM sender id, so it can generate a
token for this server.

Change-Id: Iae061e9b1a8fa74e833c9f642b8bfe55641ddc74
14 files changed
tree: db87353ba07faeb17427bd09eede6db4000d1d2e
  1. src/
  2. BUCK
  3. LICENSE.md
  4. README.md
README.md

This plugin allows to obtain push event notifications through Firebase Cloud Messaging (FCM).