Add microbadger

Author: Vishal Lal

README.md

@@ -1,5 +1,6 @@
 [![Build Status](https://travis-ci.org/microservices-demo/queue-master.svg?branch=master)](https://travis-ci.org/microservices-demo/queue-master)
 [![Coverage Status](https://coveralls.io/repos/github/microservices-demo/queue-master/badge.svg?branch=master)](https://coveralls.io/github/microservices-demo/queue-master?branch=master)
+[![](https://images.microbadger.com/badges/image/weaveworksdemos/queue-master.svg)](http://microbadger.com/images/weaveworksdemos/queue-master "Get your own image badge on microbadger.com")
 
 # queue-master