Update rubocop to version 0.26.0
Update rubocop to version 0.26.0

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