title: How to generate current date in ISO 8601 format in elixir?
body: <p>I need to generate a string with the current time in the same format as the following: <code>20130524T000000Z</code> </p>
  
  <p>The example is a timestamp for <code>Fri, 24 May 2013 00:00:00 GMT</code>.</p>
  
  <p>How would I do that? Is there a way to do it without external packages?</p>