Any files placed in this directory will be copied into the skin-database folder of any worlds that are loaded.
Please read Info for Map & Mod Pack Makers on the main forum post if you want to know how to use this.
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/wip-mods/2309193-wip-alpha-armourers-workshop-weapon-armour-skins