Spawned apple is now snapped to the grid.
Added Position.getGridSnapped test
Fixed Position.getRandomFromReference to be more accurate and concise
Snake now grows as you eat apples
Fixed bug with unmuting sounds
Ensured that apples will not spawn on top of the snake
Speed now increases whenever the snake eats an apple
Added game over condition of snake eating itself.  Game now restarts properly from a game over condition
Collision detection with the wall. We now have a complete game\!