adds CI badge to the README

fxn · fxn · commit dde03e7fd79f · 2019-01-25T09:30:12.000+01:00
diff --git a/README.md b/README.md
@@ -1,5 +1,7 @@
 # Rails Contributors
 
+[![CircleCI](https://circleci.com/gh/rails/rails-contributors.svg?style=svg)](https://circleci.com/gh/rails/rails-contributors)
+
 This is the application behind http://contributors.rubyonrails.org.
 
 ## Documentation
