Saral v1.0 release package testing

[dileep-gadiraju]

1. Follow the below steps (correct the steps if needed) and generate app-release.apk file.
2. Install app-release.apk in mobile pointing to dev server and Test the application.
3. Also add signing functionality MYAPP_UPLOAD_STORE_FILE in gradle.properties and google-services.json for firebase.

https://github.com/project-anuvaad/Project-Saral/wiki/Saral-App-build-delivery-process

[dileep-gadiraju]

Add com.google.firebase:firebase-crashlytics-gradle:2.7.1
enableProguardInReleaseBuilds

[dileep-gadiraju]

https://github.com/project-anuvaad/saral-data/blob/master/android/build.gradle#L18