add image

Author: rama-nallamilli

README.md

@@ -24,3 +24,5 @@ cat kafka-messages | docker run -i -a stdin wurstmeister/kafka /opt/kafka_2.11-0
 
 ### Viewing Graphs
 The kafka metrics are pulled in Promethues via the JMX exporter.  These can be viewed in Promethues by navigating to `http://$DOCKER_HOST_IP:9090/graph`, enter a metric name to view the graphs.
+
+![Prometheus UI](images/prometheus-ui.png?raw=true)