Update README.md

Author: petethor

README.md

@@ -3,4 +3,7 @@ This is the package for the Unity Omnitrack API by Omnifinity.
 
 ## Installation
 Use the Unity Package Manager and add this github repo using the 
-url. 
+url. 
+
+## Changelog
+Please see https://github.com/Omnifinity/Unity-Omnideck-API/blob/main/CHANGELOG.md