jqmobi with backbone + require.js

jqmobibackbone.js

require.config({
  paths: {
    jquery: "lib/jqMobi.min",
    underscore: "http://underscorejs.org/underscore-min",
    backbone: "http://backbonejs.org/backbone"
  },
  shim: {
    'backbone': {
        deps: ['underscore', 'jquery'],
        exports: 'Backbone',
        init: function() {
            Backbone.$ = window.$;
        }
    },
    'underscore': {
        exports: '_'
    }
  }
});

define(function (require) {
    var Backbone = require('backbone')
    // do something cool...
});