Add badges to README.md

Author: fmiras

README.md

@@ -1 +1,6 @@
 # micro-health
+[![Build Status](https://travis-ci.org/fmiras/micro-health.svg?branch=master)](https://travis-ci.org/fmiras/micro-health)
+[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
+[![XO code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg)](https://github.com/xojs/xo)
+[![Slack Channel](http://zeit-slackin.now.sh/badge.svg)](https://zeit.chat/)
+[![Greenkeeper badge](https://badges.greenkeeper.io/fmiras/micro-health.svg)](https://greenkeeper.io/)