In El Capitan, they introduce "System Integrity Protection".
With this protection, it is required that a kext has to be signed.
However, the kext provided by @brandonchang is not signed.
We were able to get away by using kext-dev-mode=1 in boot-args.
This doesn't work anymore with the new protection enabled.
To workaround this problem, you may need to disable such protection and also add "kext-dev-mode=1" in boot-args.
See here for more information.
Do this at your own risk...
Note that you are about to disable such protection entirely.
Good Luck