Adds Bubble sample project

Author: Aritra Roy

README.md

@@ -617,6 +617,7 @@ If you want to get started with something quick-and-dirty, then sample projects
 * [Android Testing Guide](https://github.com/ravidsrk/android-testing-guide) - Complete reference for Android Testing with examples
 * [Android Things Driver Samples](https://github.com/androidthings/drivers-samples) - Samples for Android Things peripheral drivers
 * [Android UniversalMusicPlayer](https://github.com/googlesamples/android-UniversalMusicPlayer) - This sample shows how to implement an audio media app that works across multiple form factors and provide a consistent user experience on Android phones, tablets, Auto, Wear and Cast devices
+* [Bubble](https://github.com/ImangazalievM/Bubbble ) - ample app showcases the MVP pattern and Robert Martin's Clean Architecture approach
 * [Clean Architecture Manifest](https://github.com/ImangazalievM/CleanArchitectureManifest) - Description of the main principles and rules for building an Android application using Clean Architecture approach
 * [CW Omnibus](https://github.com/commonsguy/cw-omnibus) - Source code to omnibus edition of _The Busy Coder's Guide to Android Development_
 * [Effective Android UI](https://github.com/pedrovgs/EffectiveAndroidUI) - Sample project created to show some of the best Android practices to work in the Android UI Layer