Google Set up

To do all needed stuff follow the oficial Google documentation

Key points

• Genrate and add the google-services.json into the /app directory
• Add the classpath 'com.google.gms:google-services:4.2.0' dependency to your project-level build.gradle
• Add the apply plugin: 'com.google.gms.google-services' plugin at the end of your app-level build.gradle
• Add the implementation 'com.google.android.gms:play-services-auth:16.0.1' dependency to your app-level build.gradle