Fix quick start formatting (#56)

README.md

@@ -23,9 +23,11 @@ Following apis are supported for now:
 
 # Quick start
 
-  docker run -d -p 3009:3009 azuredevx/git-rest-api
-  sleep 3 # optional: wait for container to start
-  curl localhost:3009/repos/github.com%2Foctocat%2FHello-World/contents/
+```
+docker run -d -p 3009:3009 azuredevx/git-rest-api
+sleep 3 # optional: wait for container to start
+curl localhost:3009/repos/github.com%2Foctocat%2FHello-World/contents/
+```
 
 # Deploy with docker