the food position is randomized! the game is now playable!

modified:   SnakeGame.hs
	new:      updatePlayer
	new:      updateFoodPosition
	modified: updatePosition into updateSnakePosition
	modified: updateGameState
		refactoring so that the game attribute update functions
		deal with modifying the position

		the function also handles random

	modified: parseSnake
		handling random

modified:   main.hs
	handling random