Update bootstrap-sass dependency to version 2.3.1.0
Update bootstrap-sass dependency to version 2.3.1.0

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