Add --xdemo flag to yargs to prevent strict error when generating demo pages.
Add --xdemo flag to yargs to prevent strict error when generating demo pages.

sarahjean/kss-node,chloeleichen/kss-node,sarahjean/kss-node,alexrchies/kss-node,sarahjean/kss-node,alexrchies/kss-node,fabriziogiordano/kss-node,RobLoach/kss-node,chloeleichen/kss-node,aeharding/kss-node,wyunib/kss-node,aeharding/kss-node,fabriziogiordano/kss-node,wyunib/kss-node,wyunib/kss-node,aeharding/kss-node,RobLoach/kss-node,RobLoach/kss-node,fabriziogiordano/kss-node,chloeleichen/kss-node,alexrchies/kss-node