Added phaser build and hellophaser sample

src/pixi/loaders/SpriteSheetLoader.js

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+/**
+ * @author Mat Groves http://matgroves.com/ @Doormat23
+ */
+
+/**
+ * The sprite sheet loader is used to load in JSON sprite sheet data
+ * To generate the data you can use http://www.codeandweb.com/texturepacker and publish in the 'JSON' format
+ * There is a free version so thats nice, although the paid version is great value for money.
+ * It is highly recommended to use Sprite sheets (also know as a 'texture atlas') as it means sprites can be batched and drawn together for highly increased rendering speed.
+ * Once the data has been loaded the frames are stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrameId() and PIXI.Sprite.fromFrameId()
+ * This loader will load the image file that the Spritesheet points to as well as the data.
+ * When loaded this class will dispatch a 'loaded' event
+ *
+ * @class SpriteSheetLoader
+ * @uses EventTarget
+ * @constructor
+ * @param url {String} The url of the sprite sheet JSON file
+ * @param crossorigin {Boolean} Whether requests should be treated as crossorigin
+ */
+PIXI.SpriteSheetLoader = function (url, crossorigin) {
+    /*
+     * i use texture packer to load the assets..
+     * http://www.codeandweb.com/texturepacker
+     * make sure to set the format as 'JSON'
+     */
+    PIXI.EventTarget.call(this);
+
+    /**
+     * The url of the bitmap font data
+     *
+     * @property url
+     * @type String
+     */
+    this.url = url;
+
+    /**
+     * Whether the requests should be treated as cross origin
+     *
+     * @property crossorigin
+     * @type Boolean
+     */
+    this.crossorigin = crossorigin;
+
+    /**
+     * [read-only] The base url of the bitmap font data
+     *
+     * @property baseUrl
+     * @type String
+     * @readOnly
+     */
+    this.baseUrl = url.replace(/[^\/]*$/, '');
+
+    /**
+     * The texture being loaded
+     *
+     * @property texture
+     * @type Texture
+     */
+    this.texture = null;
+
+    /**
+     * The frames of the sprite sheet
+     *
+     * @property frames
+     * @type Object
+     */
+    this.frames = {};
+};
+
+// constructor
+PIXI.SpriteSheetLoader.prototype.constructor = PIXI.SpriteSheetLoader;
+
+/**
+ * This will begin loading the JSON file
+ *
+ * @method load
+ */
+PIXI.SpriteSheetLoader.prototype.load = function () {
+    var scope = this;
+    var jsonLoader = new PIXI.JsonLoader(this.url, this.crossorigin);
+    jsonLoader.addEventListener('loaded', function (event) {
+        scope.json = event.content.json;
+        scope.onLoaded();
+    });
+    jsonLoader.load();
+};
+
+/**
+ * Invoke when all files are loaded (json and texture)
+ *
+ * @method onLoaded
+ * @private
+ */
+PIXI.SpriteSheetLoader.prototype.onLoaded = function () {
+    this.dispatchEvent({
+        type: 'loaded',
+        content: this
+    });
+};