Added X3-Alpha to the list

![ss3](https://cloud.githubusercontent.com/assets/10118841/5346914/f06a601c-7efa-11e4-81f4-23e969b34407.png)
![ss1](https://cloud.githubusercontent.com/assets/10118841/5346915/f082f884-7efa-11e4-8105-fe0ce532baf3.png)
![ss2](https://cloud.githubusercontent.com/assets/10118841/5346916/f083728c-7efa-11e4-9983-5e1f507d48da.png)