basic FullscreenExample Demo blemish fix

[lobsterman]

yo, while I am at it, here is a suggestion for the FullscreenExample. I am not familiar with the internals, but the uparrow moves the rotating quad down and vice versa. i recommend reversing the +/- in the code that updates the position of the rotating square


      if (Keyboard.isKeyDown(Keyboard.KEY_UP)) y += 0.35f * delta;
      if (Keyboard.isKeyDown(Keyboard.KEY_DOWN)) y -= 0.35f * delta;

again using lwjgl 2.9.0 on mac osx 10.8.4