Fix Ruby 2.2 on Travis (#252)
Fix Ruby 2.2 on Travis (#252)


artyom-razinov/EarlGrey,saurabhj80/EarlGrey,artyom-razinov/EarlGrey,saurabhj80/EarlGrey,ed-chin/EarlGrey,sskhandp/EarlGrey,ed-chin/EarlGrey,sskhandp/EarlGrey,ed-chin/EarlGrey,saurabhj80/EarlGrey,ed-chin/EarlGrey,google/EarlGrey,ed-chin/EarlGrey,artyom-razinov/EarlGrey,google/EarlGrey,google/EarlGrey,artyom-razinov/EarlGrey,sskhandp/EarlGrey,google/EarlGrey,artyom-razinov/EarlGrey,sskhandp/EarlGrey,saurabhj80/EarlGrey,google/EarlGrey,sskhandp/EarlGrey,saurabhj80/EarlGrey