Add gif

Author: Ruben van Vreeland

README.md

@@ -1,6 +1,8 @@
 # Elastalert Server
 **A server that runs [ElastAlert](https://github.com/Yelp/elastalert) and exposes REST API's for manipulating rules and alerts. It works great in combination with our [ElastAlert Kibana plugin](https://github.com/bitsensor/elastalert-kibana-plugin).**
 
+![img](https://www.bitsensor.io/assets/img/screenshots/template.gif)
+
 ## Installing Kibana plugin
 Kibana 4
 ```bash