title: Using secret api keys on travis-ci
body: <p>I'd like to use <a href="http://travis-ci.org/" rel="noreferrer">travis-ci</a> for one of my <a href="https://github.com/adelevie/parse-ruby-client" rel="noreferrer">projects</a>.</p>
  
  <p>The project is an API wrapper, so many of the tests rely on the use of secret API keys. To test locally, I just store them as environment variables. What's a safe way to use those keys on Travis?</p>