Update domain_name to version 0.5.20160216
Update domain_name to version 0.5.20160216

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