This script was written by goalque (goalque@gmail.com) so if you have any questions please contact the author.
This repository is for easy deployment of the script only and all credit is to author himself.
Tested with AKiTiO Thunder2 PCIe Expansion Box and GTX 750 Ti 2GB
Downloading the script and making it executable.
curl https://raw.githubusercontent.com/pozgo/nvidia-externalgpu-yosemite-installer/master/egpu-install -o ~/bin/egpu-install
chmod +x ~/bin/egpu-install
sudo egpu-install
Author: Przemyslaw Ozgo (linux@ozgo.info)