[CentOS] install nvidia driver on centos 7.1

I’m trying to install the nvidia driver on centos 7.1.  I see instructions to remove nouveau and disable the kernel module.  When I create this file and put this options in:

disable-nouveau.conf

blacklist nouveau
options nouveau modeset=0

and reboot, and run the nvidia installer again, it says nouveau kernel driver is installed.  How do I disable the nouveau kernel driver in 7.1?  Is it different than in 7.0?

Thanks,

-wes