Hotfix Demo 0.4.0.2 — Mr. Sparkle's Nightmare Steam update #1397425

I've just updated the demo with a small patch addressing some small issues I found when players were playing: Added proper control icons/names where appropriate when playing with controllers. Enhanced the auto aim slightly, to auto update when getting too far away from a target. Made an option for dropping runes with Y when playing with controllers. Made an option to auto-equip runes with X when playing with controllers. Adjusted the difficulty a little bit down on the first difficulty. Added appropriate error messages when players try to do actions they can't