Powershell for Certificate Services

https://technet.microsoft.com/en-us/library/hh848389(v=wps.630).aspx
One example of creating a Root CA
http://mikefrobbins.com/2014/11/20/use-powershell-to-install-active-directory-certificate-services/
http://www.everything-virtual.com/installing-the-home-lab/installing-an-enterprise-root-ca-on-windows-2012r2/ - Not completely powershell
http://security-24-7.com/windows-2012-r2-certification-authority-installation-guide/  ????
Summary of above link to install Root Certificate Authority using powershell