title: Accented filename on uri returns 404 with node.js request module
body: <p>I am using the request node module to fetch the content of some images. 
  For a specific one that has an accent on its filename, request is returning a 404. 
  However, it is a valid uri and it has nothing to do with encoding.
  <a href="http://www.tecnofanatico.com/wp-content/uploads/2015/07/Sin-t%C3%ADtulo-1-150x150.png" rel="nofollow">http://www.tecnofanatico.com/wp-content/uploads/2015/07/Sin-t%C3%ADtulo-1-150x150.png</a></p>
  
  <p>My encoding is <code>null</code> based on the documentation, as I expect binary data.
  I played around with different encodings but I have no luck</p>
  
  <p>What am I doing wrong here?
  Am I missing a configuration option?</p>