add codebeat

README.md

@@ -2,6 +2,7 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/carlostrub/sisyphus)](https://goreportcard.com/report/github.com/carlostrub/sisyphus)
 [![GoDoc](https://godoc.org/github.com/carlostrub/sisyphus?status.svg)](https://godoc.org/github.com/carlostrub/sisyphus)
 [![Documentation Status](https://readthedocs.org/projects/sisyphus/badge/?version=latest)](http://sisyphus.readthedocs.org/en/latest/?badge=latest)
+[![codebeat badge](https://codebeat.co/badges/64615809-e3c4-4267-a049-eaec20ad63b5)](https://codebeat.co/projects/github-com-carlostrub-sisyphus-master)
 
 # sisyphus
 Intelligent, easy to configure Spam cleaner