Google Authentication ionic 2 & 3 with Firebase -Most Easiest way for Google auth

In this video i will show the how google auth works with firebase
this is the simplest and the easiest way to get google auth from firebase
=============FIREBASE============
console.firebase.google.com/


=======GET YOUR SHA-1 KEY========
COMMAND :: keytool -exportcert -list -v -alias androiddebugkey -keystore ~/.android/debug.keystore

========INSTALL CORDOVA PLUGIN========
COMMAND::cordova plugin add cordova-plugin-googleplus --save --variable REVERSED_CLIENT_ID=myreversedclientid

Note: myreversedclientid in above command should be replaced by WEB Client Id in Reverse and it will start like com.googleusercontent.apps.XXXXXXXXXXXX

==========INSTALL GOOGLE PLUS NATIVE RAPPER============
COMMAND::$ npm install --save @ionic-native/google-plus

WINDOWS USER FOR SHA-1 KEY SHOULD REPLACE THE CORRECT PATH
keytool -exportcert -list -v -alias androiddebugkey -keystore path to keystore here

NOTE: path to keystore here should be replace with the correct debug key sotre

======INSTALL ANGULARFIRE AND FIREBASE =========
$npm install firebase angularfire2 --save

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