Peeps who say they cannot get it working should read the first post thoroughly. Try a new install of kali 2.0 and do not try apt-get update prior to get your card working.
PLEASE READ THE TUT CAREFULLY AND TRY TO FOLLOW THE STEPS and don't complain about it not working when you do not follow the steps given in the very first post.
Zenmen I don't know how you assumed the steps for installing nvidia card but you haven't read the first post for sure, please try it first before posting and tell me if you get stuck.