Get Started
https://firebase.google.com/docs/android/setup

Release Notes
https://firebase.google.com/support/release-notes/android#sdk_version_1500_april_12_2018

Important reminder
https://plus.google.com/+AndroidDevelopers/posts/dmupRXNs6Tm

Prerequisites

• Online converter of google-services.json into google-services.xml
  https://dandar3.github.io/android/google-services-json-to-xml.html

• Manual processing of google-services.json into values.xml
  https://firebase.google.com/docs/reference/gradle/#processing_the_json_file

How to integrate into your app

• Eclipse: How to integrate Firebase Analytics into your app
  http://dandar3.blogspot.com/2016/11/eclipse-integrate-firebase-analytics.html

• Eclipse: How to integrate Firebase Cloud Messaging into your app
  http://dandar3.blogspot.com/2017/01/eclipse-integrating-firebase-messaging.html

Firebase 15.0.0 components available here and libraries you need to take:

Service	Project
AdMob	android-google-firebase-ads
Analytics	android-google-firebase-analytics
Authentication	android-google-firebase-auth
Cloud Messaging	android-google-firebase-messaging
Crash Reporting	android-google-firebase-crash
Realtime Database	android-google-firebase-database
Remote Config	android-google-firebase-config