This is the fourth project in Udacity's Android Nanodegree.
It demonstrates the ability to do the following:
*Add free and paid flavors to an app, and set up a build to share code between them
*Factor reusable functionality into a Java library
*Factor reusable Android functionality into an Android library
*Configure a multi-project build to compile your libraries and app
*Use the Gradle App Engine plugin to deploy a backend
*Configure an integration test suite that runs against the local App Engine development server