Update README.md

Author: Chman

README.md

@@ -1,5 +1,7 @@
 # Post-processing Stack v1
 
-Need help ? Check out the [quick start guide](https://github.com/Unity-Technologies/PostProcessing/wiki) and [the official forums](https://forum.unity3d.com/forums/image-effects.96/) !
+Need help? Check out the [quick start guide](https://github.com/Unity-Technologies/PostProcessing/wiki) and [the official forums](https://forum.unity3d.com/forums/image-effects.96/).
 
-Found a bug ? Let us know and [post an issue](https://github.com/Unity-Technologies/PostProcessing/issues) !
+Found a bug? Let us know and [post an issue](https://github.com/Unity-Technologies/PostProcessing/issues).
+
+Interested in the upcoming Post-processing Stack v2? Check it out in the [v2 branch](https://github.com/Unity-Technologies/PostProcessing/tree/v2)!