Changes

<li>CentOS 7 Full Install DVD: http://vaultarchive.centoskernel.org/centos-vault/7.2.1511/isos/x86_64/CentOS-7-x86_64-DVD-1511.iso<br><br></li> <li>CentOS 7 Live CD: (Not required for labs, but for rescue purposes only):<br> http://vaultarchive.centoskernel.org/centos-vault/7.2.1511/isos/x86_64/CentOS-7-x86_64-LiveGNOME-1511.iso</li>