title: Heroku debugging
body: <p>I am building an application with Heroku and having some problems.
  I want to debug some content like I do with rails server:</p>
  
  <blockquote>
    <p>logger.debug '...'</p>
  </blockquote>
  
  <p>How can I do that in Heroku, so I can see the debugging in heroku logs? (or anything else..)</p>
  
  <p>Thanks!</p>