Update execjs dependency to version 2.0.0
Update execjs dependency to version 2.0.0

BryanH/follow-all,codeforamerica/follow-all,jasnow/follow-all,codeforamerica/follow-all,BryanH/follow-all,BryanH/follow-all,codeforamerica/follow-all,jasnow/follow-all,jasnow/follow-all