Changes

<li>CentOS 7 Full Install DVD: http://mirror.csclub.uwaterloo.ca/centos/7/isos/x86_64/CentOS-7-x86_64-EverythingDVD-16111708.iso<br><br></li> <li>CentOS 7 Live CD: (Not required for labs, but for rescue purposes only):<br>http://centosmirror.mirrorcsclub.rafaluwaterloo.ca/centos/7/isos/x86_64/CentOS-7-x86_64-LiveGNOME-16111708.iso</li>