Merge pull request #2 from Kombustor/greenkeeper/initial

Add Greenkeeper badge 🌴

Author: Kombustor

README.md

@@ -1,6 +1,7 @@
 ![CircleCI](https://img.shields.io/circleci/build/github/Kombustor/rss-fulltext-proxy.svg)
 ![License](https://img.shields.io/github/license/Kombustor/rss-fulltext-proxy.svg)
 ![Docker Pulls](https://img.shields.io/docker/pulls/kombustor/rss-fulltext-proxy.svg)
+[![Greenkeeper badge](https://badges.greenkeeper.io/Kombustor/rss-fulltext-proxy.svg)](https://greenkeeper.io/)
 
 # RSS Fulltext Proxy 📃