Update th_TH.ini

Android system does not show in My language TH , Please help me to support my project.
![screenshot_2014-07-05-13-48-48](https://cloud.githubusercontent.com/assets/8061421/3485956/b4aedca2-0410-11e4-9129-6b3a4c2110f2.png)
![screenshot_2014-07-05-13-48-28](https://cloud.githubusercontent.com/assets/8061421/3485957/cab83534-0410-11e4-9c73-6cce17da1708.png)