Use path.join to fix regression bug re. missing leading slashes
Use path.join to fix regression bug re. missing leading slashes

davejachimiak/broccoli-sass,12150w/broccoli-sass,k-fish/broccoli-sass,joliss/broccoli-sass,michaellopez/broccoli-sass-source-maps,aexmachina/broccoli-sass-source-maps,toranb/broccoli-sass-rhel,justinwoo/broccoli-sass-source-maps