Create Photoshop layer util class.

Usage:

```
var util = new PSLayerUtil();
alert(util.setLayerColor(PSLayerUtil.LayerColors.Red));
```
![screen shot 2013-08-01 at 6 34 54 am](https://f.cloud.github.com/assets/194222/889943/4b341554-fa29-11e2-8190-aee2f79a4449.png)
![screen shot 2013-08-01 at 6 35 25 am](https://f.cloud.github.com/assets/194222/889944/4ec93a14-fa29-11e2-864a-5e08c8b7636f.png)
![screen shot 2013-08-01 at 6 35 33 am](https://f.cloud.github.com/assets/194222/889945/51e05d5e-fa29-11e2-959f-29e718d2a802.png)