Please, download all files before executing any script. There are several dependencies between them.
yum install wget unzip -y
wget https://github.com/simplyjarod/system/archive/master.zip
unzip master.zip && cd system-master && rm -rf ../master.zip
chmod u+x *.sh -R
git clone https://github.com/simplyjarod/system && cd system
bash setup.sh