title: OAConsumer multi-part POST
body: <p>I am using the <a href="http://code.google.com/p/oauthconsumer/wiki/UsingOAuthConsumer" rel="nofollow">Objective-C OAConsumer framework</a> to post to an OAuth/XAuth API and it is working really well to post basic strings, where I simply add an OARequestParameter. But I can't seem to find any reference to doing multi-part posts, where for instance image data is submitted along with the post. </p>
  
  <p>Does anyone know if the Objective-C OAConsumer framework supports multi-part and how to do it?</p>
  
  <p>Or, does anyone know of another way to do it still using XAuth to authenticate?</p>