Dissapearing platforms, menu, and new levels!

Took a bit to do this since i recently switched os (Manjaro to Arch), I had to trick unity into reading my project folder which wasn't nice. Also i wanted to play with my new OS and Xmonad setup. Also Also, I made all (hopefully all) movement happen in a FixedUpdate() and not Update() (This means that they will move the same speed in the editor and build, making it easier for me to do shit).