How to Install Phantomjs 2.1.1 on CentOS 7.6

This video covers the method to install Phantomjs 2.1.1 on Centos 7.6 Phantomjs is a headless web browser scriptable with JavaScript. For more explanation on this video: https://www.linuxhelp.com/how-to-install-phantomjs-2-1-1-on-centos-7-6