Things are now rendered with their image

I don't know if there is actually a link between the thing type and the image name in the wad itself. But the guide you showed had a table so i copied that :)
![things_with_textures](https://cloud.githubusercontent.com/assets/840235/4037730/32ca9350-2ca8-11e4-866f-3fd09b8eafb0.jpg)