Updated Installer Script

![Syncplay_1 2 6_Setup_2013-01-29_20-24-17](https://f.cloud.github.com/assets/3169290/108573/7bc4c650-6a55-11e2-8574-f33c858b2fdd.png)

Uninstaller doesn't have prompt Language choose, so it's in Polish. "Usun plik konfiguracyjny" means "Delete configuration file".

![Deinstalator_programu_Syncplay_1 2 6_2013-01-29_21-51-04](https://f.cloud.github.com/assets/3169290/108583/b7f72244-6a55-11e2-9523-7798d6a935f9.png)