Update README.md

Updated to add macOS 12.x compatibility information.

Author: rtrouton

README.md

@@ -13,6 +13,7 @@ practice. Privileges helps enable users to act as administrators of the system o
 
 **Privileges supports the following macOS versions:**
 
+* macOS 12.x
 * macOS 11.x
 * macOS 10.15.x
 * macOS 10.14.x
@@ -93,4 +94,4 @@ Please contact us at:
 
 # Support
 
-This project is 'as-is' with no support, no changes being made. You are welcome to make changes to improve it but we are not available for questions or support of any kind.
+This project is 'as-is' with no support, no changes being made. You are welcome to make changes to improve it but we are not available for questions or support of any kind.