Corner collision is functional && adjusted player movement

the corners of the player "hit box" now have box-to-box collision detection with the environment. 

The 2d array in TiledRoom's constructor was swapped around ([rows][columns]) in order to load the map properly.
 
Also the player's movement is now controlled by adding/subtracting moveSpeed and stopSpeed to the player's movement vector(dx, dy). This should hopefully give more control and more possibilities for tweakage