jsdoc blocks added to every file and tidied up.

src/core/Stage.js

@@ -129,7 +129,7 @@ Phaser.Stage.prototype = {
 *//**
 * Set
 * @param {string} The background color you want the stage to have
-*/.
+*/
 Object.defineProperty(Phaser.Stage.prototype, "backgroundColor", {
 
     get: function () {

src/sound/Sound.js

@@ -282,7 +282,6 @@ Phaser.Sound.prototype = {
 	 * @param {Description} stop - Description.
 	 * @param {Description} volume - Description.
 	 * @param {Description} loop - Description.
-	 */
     addMarker: function (name, start, stop, volume, loop) {
 
     	volume = volume || 1;