README.md in routemaster-drain-3.0.2 vs README.md in routemaster-drain-3.0.3

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-# routemaster-drain [![Version](https://badge.fury.io/rb/routemaster-drain.svg)](https://rubygems.org/gems/routemaster-drain) [![Build](https://travis-ci.org/deliveroo/routemaster-drain.svg?branch=master)](https://travis-ci.org/deliveroo/routemaster-drain) [![Code Climate](https://codeclimate.com/github/deliveroo/routemaster-drain/badges/gpa.svg)](https://codeclimate.com/github/deliveroo/routemaster-drain) [![codecov](https://codecov.io/gh/deliveroo/routemaster-drain/branch/master/graph/badge.svg)](https://codecov.io/gh/deliveroo/routemaster-drain) [![Docs](http://img.shields.io/badge/API%20docs-rubydoc.info-blue.svg)](http://rubydoc.info/github/deliveroo/routemaster-drain)
+# routemaster-drain [![Version](https://badge.fury.io/rb/routemaster-drain.svg)](https://rubygems.org/gems/routemaster-drain) [![Build](https://circleci.com/gh/deliveroo/routemaster-drain.svg?style=shield&circle-token=7c256c63e5683bc25f0b4c3db0170446c91d36c8)](https://circleci.com/gh/deliveroo/routemaster-drain) [![Code Climate](https://codeclimate.com/github/deliveroo/routemaster-drain/badges/gpa.svg)](https://codeclimate.com/github/deliveroo/routemaster-drain) [![codecov](https://codecov.io/gh/deliveroo/routemaster-drain/branch/master/graph/badge.svg)](https://codecov.io/gh/deliveroo/routemaster-drain) [![Docs](http://img.shields.io/badge/API%20docs-rubydoc.info-blue.svg)](http://rubydoc.info/github/deliveroo/routemaster-drain)
 
 A Rack-based event receiver for the
 [Routemaster](https://github.com/deliveroo/routemaster) event bus.
 
 