title: ShareKit SHKFacebookSessionProxyURL
body: <p>I'm implementing <strong>ShareKit</strong> in my app. In the <strong>SHKConfig.h</strong> file, in the section where the Facebook data is inserted, there is a line saying: <strong>#define SHKFacebookSessionProxyURL @""</strong>.</p>
  
  <p>What am I supposed to enter there?</p>