 <p>Code coverage, linting, etc. are provided by various services that you have to sign up with. For example, <a href="https://coveralls.io" rel="nofollow">coveralls.io</a> provides test coverage. Another popular service that provides many different types of code analysis and coverage tools is <a href="https://codeclimate.com" rel="nofollow">Code Climate</a>. Most of those sites provide badges you can add to your GitHub repo, usually in the README.</p> <p>For example, a repo I maintain has accounts with Travis, Gemnasium, and Code Climate, and I have badges for those services on my README: <a href="https://github.com/monfresh/ohana-sms" rel="nofollow">https://github.com/monfresh/ohana-sms</a></p>