README.RPC: Document quit/restart reply format change

README.RPC

@@ -470,6 +470,14 @@ api-example.py - a Python script to access the API
 Feature Changelog for external applications using the API:
 
 
+API V
+
+Modified API commands:
+ 'quit' - expand reply to include a complete STATUS section
+ 'restart' - expand reply to include a complete STATUS section
+
+---------
+
 API V2.1 (BFGMiner v3.4.0)
 
 Added API command: