Add Ruby 2.0, 2.1, 2.2 to Travis CI
Add Ruby 2.0, 2.1, 2.2 to Travis CI
cppforlife/checkman,cppforlife/checkman,cppforlife/checkman,cppforlife/checkman,Amit-PivotalLabs/checkman,Amit-PivotalLabs/checkman,cppforlife/checkman,Amit-PivotalLabs/checkman,cppforlife/checkman,Amit-PivotalLabs/checkman,Amit-PivotalLabs/checkman,Amit-PivotalLabs/checkman