Merge pull request #2354 from prometheus/beorn7/lint

Documentation: Add Code Climate badges to README.md

README.md

@@ -4,6 +4,8 @@
 [![Docker Repository on Quay](https://quay.io/repository/prometheus/prometheus/status)][quay]
 [![Docker Pulls](https://img.shields.io/docker/pulls/prom/prometheus.svg?maxAge=604800)][hub]
 [![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/prometheus)](https://goreportcard.com/report/github.com/prometheus/prometheus)
+[![Code Climate](https://codeclimate.com/github/prometheus/prometheus/badges/gpa.svg)](https://codeclimate.com/github/prometheus/prometheus)
+[![Issue Count](https://codeclimate.com/github/prometheus/prometheus/badges/issue_count.svg)](https://codeclimate.com/github/prometheus/prometheus)
 
 Visit [prometheus.io](https://prometheus.io) for the full documentation,
 examples and guides.