creating a custom widget using Dijit

gistfile1.js

require(["dojo/io/script","dojo/dom","dojo/_base/array","custom/widget"],function(jsonp,dom,util,Widget){

             var container = dom.byId("twitterbadge"),
                 jsonpArgs = {
                  url: "http://twitter.com/statuses/user_timeline.json",
                  callbackParamName: "callback",
                  content: {
                   screen_name: "thinkphp",
                   count: 8
                  },
                  load: function(data){
                    var tweets = [];
                    util.forEach(data, function(tweet){
                        tweet.text = tweet.text.replace(/((ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?)/gi,'<a href="$1" target="_blank">$1<\/a>').replace(/@([a-zA-Z0-9_]+)/gi,'<a href="http://twitter.com/$1" target="_blank">@$1<\/a>').replace(/#([a-zA-Z0-9_]+)/gi,'<a href="http://search.twitter.com/search?q=%23$1" target="_blank">#$1<\/a>');
                        new Widget({'name': tweet.user.name,'avatar':tweet.user.profile_image_url,'bio': tweet.text}).placeAt(container)
                    });
                  },
                  error: function(error){
                        container.innerHTML = "An unexpected error occurred: " + error;
                  }
             }
             jsonp.get(jsonpArgs)
        });