Updated angry birds, pvz, farmer skins. WIP.
Updated farmer skins (added the night version as well.
Merge branch 'master' into maze_skin
Updated the farmer avatar, but they are in incorrect order.
Merge branch 'master' into maze_skin
Updated the avatars so that their facing is correct.
Merge branch 'master' into maze_skin
Merged with other skin update.
Merge pull request #193 from nanan9177/maze_skin

PvZ, Angry Birds, Farmer, Minecraft skins
Updated artist avatar sprite.