Add repo deprecation notice

Moved repo to https://github.com/Jim-Hodapp-Coaching/ambi_mock_client

Author: Jim Hodapp

README.md

@@ -1,5 +1,8 @@
 # ambi_mock_client
 
+## NOTE
+This repo is now deprecated as it's moved into a broader GitHub organization [now found here](https://github.com/Jim-Hodapp-Coaching/ambi_mock_client).
+
 ## Usage
 
 You must have Rust installed to build `ambi_mock_client`.
@@ -85,4 +88,4 @@ Response: Ok(
         },
     },
 )
-```
+```