Updated to RimWorld 1.2

Added armored variants of vanilla floors, as well as compatibility with floors from More Furniture, Biomes! Islands, Orassans, and the Royalty DLC. Please thank Cerrendel for providing the defs and patches for these!

Reverted the typo that wasn't actually a typo. I can read. I swear.

Fixed typo in mod description and added the steam url to the about screen.

[Auto-generated text]: Initial upload.