Add Code Climate badge

README.md

@@ -2,6 +2,7 @@
 
 [![Build Status](https://secure.travis-ci.org/jnicklas/capybara.png)](http://travis-ci.org/jnicklas/capybara)
 [![Dependency Status](https://gemnasium.com/jnicklas/capybara.png)](https://gemnasium.com/jnicklas/capybara)
+[![Code Quality](https://codeclimate.com/badge.png)](https://codeclimate.com/github/jnicklas/capybara)
 
 Capybara helps you test Rails and Rack applications by simulating how a real
 user would interact with your app. It is agnostic about the driver running your