I think his license is the best one I've seen yet. In main.lua it says...

  *	NOT COPYRIGHT STABYOURSELF.NET
	NO RIGHTS RESERVED
	STEAL MY SHIT AND I'LL FUCK YOU UP
	PRETTY MUCH EVERYTHING BY MAURICE GUÉGAN AND IF SOMETHING ISN'T BY ME THEN IT SHOULD BE OBVIOUS OR NOBODY CARES

  THIS AWESOME PIECE OF CELESTIAL AMBROSIA IS RELEASED AS NON-COMMERCIAL, SHARE ALIKE, WHATEVER. YOU MAY PRINT OUT THIS CODES AND USE IT AS WALLPAPER IN YOUR BATHROOM.
	FOR SPECIFIC LICENSE (I know you linux users get a hard on when it comes to licenses) SEE http://creativecommons.org/licenses/by-nc-sa/3.0/
	NOW GO AWAY (or stay and modify shit. I don't care as long as you stick to the above license.)*