update readme

README.md

@@ -7,16 +7,19 @@ Yet another JavaScript preloader. Used to preload media to ensure it has loaded
 
 To use first you need an array of items to preload
 
+```javascript
 var items = [
 	{ identifier: "enemyImage", type:"image", src: "images/house.jpeg"},
 	{ identifier: "backgroudSound",type:"audio", src: "sounds/background.mp3"},
 	{ identifier: "bangSound",type:"audio", src: "sounds/bang.mp3"},
 	{ identifier: "explosionSound",type:"audio", src: "sounds/explosion.mp3"},
 	{ identifier: "laserSound",type:"audio", src: "sounds/laser.mp3"}
 ];
+```
 
 pass these into the constructor
 
+```javascript
 var preloader = new Preloader(items);
 
 preloader.preloadComplete = function() {
@@ -28,8 +31,10 @@ preloader.progressChanged = function(percentComplete) {
 };
 
 preloader.preload();
-
+```
 Once the preload complete event has fired you can access the loaded objcts with
 
+```javascript
 var sound = _PreLoader.getItem("id");
 sound.play();
+```