Tiny Update

Just implementing some unofficial changes to the code.
Bug fix: Left and Top movement

Fixed the problem where the player would be stuck moving when in left
and on top.
Bug fix: Left and Top movement

Forgot to save >.<
General Fixes & Major Problem

Fixed some issues with the getLevelSize() method and found a major
problem in which the new HUDLoader class ALWAYS receives a
nullPointerException.
Fixed Null Exception

Had to define hud as hud.
General fixes after "the null disaster"

Yea... I feel stupid now after that issue. Anyway! Got the movement
finally working with the bottom and the right side.
Added Edges

Added edges to the map in which the player cannot move past the edge of
the camera anymore.
Merge remote-tracking branch 'origin/master' into SubTacoTom