Add deprecated banner image

Author: arthurbarr

README.md

@@ -1,6 +1,7 @@
+![DEPRECATED.  Please use ibm-messaging/mq-container instead](mq-docker-deprecated.jpg)
 [![Build Status](https://travis-ci.org/ibm-messaging/mq-docker.svg?branch=master)](https://travis-ci.org/ibm-messaging/mq-docker)
 
-# Contents
+# Deprecated sample - contents
 * [Overview](#overview)
 * [Docker Hub](#docker-hub)
 * [Docker Store](#docker-store)