[README.md] Added reference to the example

README.md

@@ -6,6 +6,8 @@ A docker container that pulls a git repo (updates it) every given amount of time
 
 There are many scenarios where such a container could help. For example (as I use it), this image could be used to pull a hugo built website (living in a public git repo) to a local folder, so that another docker container can serve the most recent files.
 
+See the [docker-compose example](example/) for a quick overview how this works.
+
 
 ## Building