README badge

Author: chris48s

README.md

@@ -1,6 +1,7 @@
 # Django proof-of-concept for CodeBuddies V3
 
 ![Test](https://github.com/codebuddies/django-concept/workflows/Test/badge.svg)
+[![Coverage Status](https://coveralls.io/repos/github/codebuddies/backend/badge.svg?branch=master)](https://coveralls.io/github/codebuddies/backend?branch=master)
 
 Background: https://github.com/codebuddies/codebuddies/issues/1136