Firebase Remote Config Monitor Versions Save

For this release, the Firebase Remote Config Monitor has been re-written as a Cloud Function which can be deployed to Firebase. This has many advantages

• The app now reacts to updates from Remote Config rather than needing to poll. This leads to a faster notification.
• The app now has access to information about the user who made the change and includes their name in the post to slack.
• The app no longer requires any hardware but runs entirely serverless in Cloud Functions for Firebase.

This initial release of Firebase Remote Config Monitor allows the functionality to be implemented as node application which polls the Firebase Remote Config API, determines changes, and posts those changes to slack.