Added override property to HTML5AudioSoundManager

Author: pavle-goloskokovic

src/sound/html5/HTML5AudioSoundManager.js

@@ -4,6 +4,15 @@ var HTML5AudioSound = require('./HTML5AudioSound');
 var HTML5AudioSoundManager = new Class({
     Extends: BaseSoundManager,
     initialize: function HTML5AudioSoundManager(game) {
+        /**
+         * Flag indicating whether for particular sound if there are no idle instances
+         * of HTML5 Audio tag one of them should be stopped and used for succeeding playback
+         * or if succeeding Phaser.Sound.HTML5AudioSound#play call should be ignored.
+         *
+         * @property {boolean} override
+         * @default true
+         */
+        this.override = true;
         /**
          * An array for keeping track of all the sounds
          * that were paused when game lost focus.