How can I develop a plugin for Kibana?
This might be an old question, but since I am facing the same issue, so maybe someone else could use this answer.
I found this presentation by Elastic for how to build you own Kibana plugin, it is an old one, they are working on Kibana 5 I guess, but could be a good starting point for someone.
https://www.elastic.co/elasticon/conf/2016/sf/how-to-build-your-own-kibana-plugins
I have also found this article that is more recent and the author uses ELK 7