title: convert ruby date to string without losing format
body: <p>I'm trying to convert a Ruby <code>Date</code> object to a string. The format of the date is: <code>Sun, 15 Sep 2013</code></p>
  <p>However, when I convert it to a string using <code>#to_s</code> it gives me the following: <code>&quot;2013-09-15&quot;</code></p>
  <p>Instead, I want it to become: <code>&quot;Sun, 15 Sep 2013&quot;</code></p>