Temporarily removing PWD button

Is not working as expected - does not add config files into alertmanager/prometheus.

README.md

@@ -38,8 +38,10 @@ A one-line script is provided to help you get started quickly. You can test-driv
 
 Use your own laptop or the free community-run Docker playground: play-with-docker.com.
 
+<!--
 [![Try in PWD](https://cdn.rawgit.com/play-with-docker/stacks/cff22438/assets/images/button.png)](http://play-with-docker.com?stack=https://raw.githubusercontent.com/alexellis/faas/master/docker-compose.yml&stack_name=func)
-
+> This doesn't work since it won't clone the Prometheus and AlertManager config. 
+-->
 ### [Begin the TestDrive](https://github.com/alexellis/faas/blob/master/TestDrive.md)
 
 Here is a screenshot of the API gateway portal - designed for ease of use.