Updating readme with release notes link

Author: vishalnarkhede

README.md

@@ -15,6 +15,7 @@
 - [Register](https://getstream.io/chat/trial/) to get an API key for Stream Chat
 - [React Native Chat Tutorial](https://getstream.io/chat/react-native-chat/tutorial/)
 - [Chat UI Kit](https://getstream.io/chat/ui-kit/)
+- [Release Notes](https://github.com/GetStream/stream-chat-react-native/releases/)
 
 ## React Chat Tutorial