Background
The purpose of this project was to familiarize myself with how to get automated Google Play publishing setup.
About
The actual Android application here is described in the "Build your first app" example on the developer.android.com page.
CI/CD strategy
This project uses Travis CI, and relies on the Gradle Play Publisher plugin to automatically created a signed APK, and then publish it.
The Gradle Play Publisher plugin internally utilizes the Google Play Developer API.
On each commit, a signed APK is created, and then published.