Added HG/SS overworld sprites.
drwxr-xr-x - chrome
drwxr-xr-x - cries
drwxr-xr-x - cropped-pokemon
drwxr-xr-x - crystal
drwxr-xr-x - diamond-pearl
drwxr-xr-x - emerald
drwxr-xr-x - firered-leafgreen
drwxr-xr-x - fonts
drwxr-xr-x - gender-rates
drwxr-xr-x - gold
drwxr-xr-x - heartgold-soulsilver
drwxr-xr-x - icons
drwxr-xr-x - items
drwxr-xr-x - jp-blue
drwxr-xr-x - overworld
drwxr-xr-x - pawprints
drwxr-xr-x - platinum
drwxr-xr-x - red-blue
drwxr-xr-x - ruby-sapphire
drwxr-xr-x - silver
drwxr-xr-x - sugimori
drwxr-xr-x - trozei
drwxr-xr-x - versions
drwxr-xr-x - yellow