add Ruby 2.2 to travis.yml
add Ruby 2.2 to travis.yml
rednovalabs/timecop,grosser/timecop,grosser/timecop,kidaa/timecop,ducthanh/timecop,travisjeffery/timecop,ducthanh/timecop,7091lapS/timecop,backupify/timecop,7091lapS/timecop,rednovalabs/timecop,backupify/timecop