I am getting $.jsonp is not a function error. Have included js from this link: http://cloud.github.com/downloads/jaubourg/jquery-jsonp/jquery.jsonp-2.4.0.js
Any thing else needs to be included. Checking in firefox 25.0v.
Code used is:
$.jsonp({
  "url": "http://gdata.youtube.com/feeds/api/users/123456?callback=?",
  "data": {
      "alt": "json-in-script"
  },
  "success": function(userProfile) {
      alert("Could not find user ");
  },
  "error": function(d,msg) {
      alert("Could not find user ");
  }
});
This was sample code given at site: https://github.com/jaubourg/jquery-jsonp/blob/master/doc/TipsAndTricks.md
 
     
    