update readme

Author: juan-medina

README.md

@@ -2,6 +2,7 @@
 
 [![Build Status](https://travis-ci.org/LearningByExample/KotlinReactiveMS.svg?branch=master)](https://travis-ci.org/LearningByExample/KotlinReactiveMS)
 [![codecov](https://codecov.io/gh/LearningByExample/KotlinReactiveMS/branch/master/graph/badge.svg)](https://codecov.io/gh/LearningByExample/KotlinReactiveMS)
+[![codebeat badge](https://codebeat.co/badges/de19292d-7dbf-49fd-b261-fb07b8522d3d)](https://codebeat.co/projects/github-com-learningbyexample-kotlinreactivems-master)
 
 _IntelliJ code coverage runner gives a 100%, unfortunately I've not managed to get the same results using codecov.io and JaCoCo_