title: How to format ruby date like 16d 2h 50m?
body: <p>I want to format a ruby date like this:</p>
  
  <pre><code>16d 2h 50m
  </code></pre>
  
  <p>How can I do this?</p>
  
  <p>Also, what is that helper that gives you a date like '3 minutes ago'?</p>