Gamepad Support

Hi!

• Added gamepad support. Now you can wander in the dark using D-Pads or Sticks, instead of keyboard;
• Changed "Floppy Hunter" achievement to not use steam stats, because some people were having issues with it. If you had any issues with it, enter the game, it will check your save file and award you the achievement;
• Minor bug fixes.

Thanks to everyone who is playing, already played or will play the game!