title: redirect on facebook app install
body: <p>Upon install of my app on a Facebook Page, I'd like to send the user to an URL with further instructions. I'm starting the installation with <a href="http://facebook.com/add.php?api_key=app_api_key&amp;page=page_id" rel="nofollow">http://facebook.com/add.php?api_key=app_api_key&amp;page=page_id</a>, which installs but redirects the user to the Facebook Page itself. It seems like various forms of redirect were available at some point:</p>
  
  <ul>
  <li>Post-authorize callback URL. I can no longer find that in App settings.</li>
  <li>The next parameter for add.php. I can't seem to get this to work</li>
  </ul>
  
  <p>I have seen some apps that do redirect upon install, so I believe this is possible. Maybe it's using an old Post-authorize setting that's no longer visible? </p>
  
  <p>Any help or point would be greatly appreciated! I'm also not attached to using add.php, if there's a Facebook Connect method that does this I'd use that instead (I'm looking at profile.addtab though that doesn't seem to work either).      </p>