run Travis against Ruby 2.1
run Travis against Ruby 2.1

coopdevs/timeoverflow,jordipujollarena/timeoverflow,coopdevs/timeoverflow,coopdevs/timeoverflow,jordipujollarena/timeoverflow,d2bit/timeoverflow,jordipujollarena/timeoverflow,d2bit/timeoverflow,coopdevs/timeoverflow,d2bit/timeoverflow,d2bit/timeoverflow