title: How to add minutes to a Time object
body: <p>In Ruby, how do I do <code>Time.now + 10.hours</code>?</p>
  
  <p>Is there an equivalent for <code>secs</code> and <code>mins</code>?  For example:</p>
  
  <pre><code>Time.now + 15.mins
  </code></pre>