Android App Flavor

For a demo we set up the android build system to compile app flavors.

Here the usage: In {projectRoot}/

• Clean first (required)
• yarn clean:android
• Bundle app with haul and start development server. ** yarn bundle:android
• Build and install flavored apk on connected phone or simulator ** cd android && ./gradlew installR2bdemoDebug
• Release flavored apk to {projectRoot}/app/build/outputs/apk/r2bdemo/release ** cd android && ./gradlew assembleR2bdemo
• Install release on a phone ** adb install app-r2bdemo-release.apk

We also introduced a 'production' flavor used for our regular development. Its usage is reflected in package.json. If you switch back to flavor 'production' remember to yarn clean:android first.