Use svg instead of png to get better image quality

README.md

@@ -21,7 +21,7 @@
 
 - [![build status](https://ci.gitlab.org/projects/1/status.png?ref=master)](https://ci.gitlab.org/projects/1?ref=master) on ci.gitlab.org (master branch)
 
-- [![Code Climate](https://codeclimate.com/github/gitlabhq/gitlabhq.png)](https://codeclimate.com/github/gitlabhq/gitlabhq)
+- [![Code Climate](https://codeclimate.com/github/gitlabhq/gitlabhq.svg)](https://codeclimate.com/github/gitlabhq/gitlabhq)
 
 - [![Coverage Status](https://coveralls.io/repos/gitlabhq/gitlabhq/badge.png?branch=master)](https://coveralls.io/r/gitlabhq/gitlabhq)