Tray icon

[blaberry]

Making the app a tray icon makes the application bar a little more slick, no offense gaben.

[Ririshi]

This can be closed as PR #9 adds it.

[johnsaucier]

Can you compile this?

[Ririshi]

@johnsaucier: it's available as a new release my fork

https://github.com/Ririshi/FullscreenLock/releases/tag/1.2.0