fixes #315 and adds a little clarity to the certificate related command instructions
fixes #315 and adds a little clarity to the certificate related command instructions

RobbertJanSW/knife-windows,chef/knife-windows,ClogenyTechnologies/knife-windows,ClogenyTechnologies/knife-windows,RobbertJanSW/knife-windows,chef/knife-windows,MsysTechnologiesllc/knife-windows,MsysTechnologiesllc/knife-windows