Added two new settings for GamePad 🎮 and KeyBoard ⌨️.
And also now you can specify the number of the empty square, by default it is the lower right quadrant.
emptySlot:[1], // Empty square number, defaults to the lower right quadrant.
keyBoard:true, // Control using the keys on the keyboard
gamePad:true // Control using the joystick on the Gamepad
