title: Twitter profile image upload in objective-c
body: <p>I want to upload an image to my twitter profile using objective-c. I saw in the twitter API that I need to send a HTML post to <code>http://twitter.com/account/update_profile_image.format</code> and send the picture as a parameter. I am done with the authentication. I am stuck with the uploading. Maybe somebody can help me with sending the picture as a parameter?</p>