Add Room Link

README.md

@@ -18,7 +18,7 @@
 4. PlaceHolderView: https://github.com/janishar/PlaceHolderView
 5. AndroidDebugDatabase: https://github.com/amitshekhariitbhu/Android-Debug-Database
 6. Calligraphy: https://github.com/chrisjenx/Calligraphy
-7. GreenDao: http://greenrobot.org/greendao/
+7. Room: https://developer.android.com/topic/libraries/architecture/room.html
 
 ### Concept reference resources:
 1. [Introduction to Dagger 2: Part 1](https://blog.mindorks.com/introduction-to-dagger-2-using-dependency-injection-in-android-part-1-223289c2a01b#.ki6nt86l6)
@@ -50,4 +50,4 @@
 ```
 
 ### Contributing to Android MVVM Architecture
-Just make pull request. You are in!
+Just make pull request. You are in!
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