Update README with info on new repository

The Exponent SDK has all the native components and API's that I need to build this app, and as a bonus they are all cross platform compatible with iOS and Android!  I've made a new project repository to port the app over to Exponent. Future work will continue in the new repository: https://github.com/Traviskn/react-native-exponent-pokemon-go

Author: Traviskn

README.md

@@ -3,3 +3,7 @@ A simple Pokemon GO clone.
 Utilizes react native maps, camera, touch and gesture handling, sensors, and animations to achieve a very basic demo of augmented reality.
 
 Currently only iOS is supported
+
+Note: I have ported this app to utilize the Exponent SDK so that I can more easily get it working on both iOS and Android.  
+While this project is still a useful example of how to create a Pokemon Go clone in vanilla React Native, all future work will
+be continued in a new project repository: https://github.com/Traviskn/react-native-exponent-pokemon-go