fixes #321 and raises an error if a bogus feature is given
fixes #321 and raises an error if a bogus feature is given

shoekstra/chef-windows,blairham/windows-cookbook,protec-cookbooks/windows,rlaveycal/windows,criteo-forks/windows,juliandunn/windows,opscode-cookbooks/windows,ruicovelo/windows,GannettDigital/chef-windows,stuartpreston/windows,chef-cookbooks/windows,autoclone/windows,daptiv/windows,urban-institute/windows