Converted main menu to new UI System. Will work on other GUI components soon.
Still need to fix the plant. Added the pickups as drops (I think 30% droprate). Added the progression system.(it's really bad. feel free to fix it)
Merge branch 'master' of https://github.com/Bamboy/12-Seconds-Gamejam

Conflicts:
	Assets/Scripts/GUI/MainMenu.cs