Add grafana screenshots

Author: rama-nallamilli

README.md

@@ -22,7 +22,13 @@ cat kafka-messages | docker run -i -a stdin wurstmeister/kafka /opt/kafka_2.11-0
 cat kafka-messages | docker run -i -a stdin wurstmeister/kafka /opt/kafka_2.11-0.10.0.1/bin/kafka-console-producer.sh --broker-list 192.168.99.100:9092 --topic audit
 ```
 
-### Viewing Graphs
+### Viewing Prometheus Metrics
 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)
+
+### Viewing Graphs in Grafana
+Grafana can be used to plot the metrics in from Prometheus, navigate to Grafana on `http://$DOCKER_HOST_IP:3000` (admin:admin).  An example dashboard is available to import in `dashboards/Kafka.json`.
+
+![Grafana Kafka Dashboard](images/grafana-ui.png?raw=true)
+