where is the mistake!! :D

gistfile1.js

original file :

Welcome = Ember.Application.create({
ready: function(){
// alert('you did it!');
}
});

Welcome.Book = Ember.Object.extend({
  title: '',
  author: '',
  genre: ''
});

Welcome.booksController = Ember.ArrayController.create({
  content: [],
  loadBooks: function(){
  var self = this;
  $.getJSON('data/books.json', function(data) {
    data.forEach(function(item){
       self.pushObject(Welcome.Book.create(item));
    });
  });
  }
});



my file
this.Welcome = Ember.Application.create(
    ready : ->

)

this.Welcome.Book = Ember.Object.extend(
    title : ""
    autor : ""
    genre : ""
)

this.Welcome.booksController = Ember.ArrayController.create(
    content : []

    loadBooks : ->
        $.getJSON('data/books.json', (data) ~>
            data.forEach (item) ->
                this.pushObject(Welcome.Book.create(item))
            )
)