Add TODO.

Author: SteveMarshall

README.md

@@ -38,3 +38,4 @@ TODO
 - `client` recipe
 - Handle sources other than GitHub
 - Work out how to better serve `.git` folders; cloning via Apache doesn't appear to work
+- Decide if cloning at provision-time is the right thing to do, or if we should do it with a service.