// Format: type['b' for blocks, 'i' for items],subtype['block','stairs','slab','wall','tile_wall', etc...],name,texture(optional)

// Examples:
// b,block,example_block,example_texture
// b,block,polished_cobblestone,             <- (if there is no specified texture, uses 'filename.png')
// b,stairs,polished_cobblestone_stairs,polished_cobblestone
// b,slab,polished_cobblestone_slab,polished_cobblestone
// b,wall,polished_cobblestone_wall,polished_cobblestone