title: How to format Ecto timestamp
body: <p>I would like to use in my template just the day and month of the timestamp <code>inserted_at</code> that Ecto automatically creates (<code>2017-04-10 16:22:43</code>) when using:</p>
  
  <pre><code>&lt;%=i.inserted_at%&gt;
  </code></pre>
  
  <p>As of today, what's the best way of doing this?</p>