Mention gamestates directory in files.md.
Mention gamestates directory in files.md.

domob1812/huntercore,wiggi/huntercore,wiggi/huntercore,domob1812/huntercore,domob1812/huntercore,wiggi/huntercore,wiggi/huntercore,wiggi/huntercore,wiggi/huntercore,domob1812/huntercore,domob1812/huntercore,domob1812/huntercore