Use the latest 2.1 and 2.2 ruby versions for the test builds
Use the latest 2.1 and 2.2 ruby versions for the test builds

swanson/stringer,mpraglowski/stringer,jqr/stringer,jqr/stringer,swanson/stringer,dperson/stringer,thiagosil/stringer,dperson/stringer,Koronen/stringer,run-project/stringer,nibble/stringer,jeroenj/stringer,adscott/stringer,jeroenj/stringer,swanson/stringer,Koronen/stringer,swanson/stringer,Koronen/stringer,mpraglowski/stringer,thiagosil/stringer,jqr/stringer,nibble/stringer,nobuti/stringer,mpraglowski/stringer,jeroenj/stringer,run-project/stringer,adscott/stringer,geemus/stringer,geemus/stringer,adscott/stringer,Koronen/stringer,nibble/stringer,nobuti/stringer,dperson/stringer,jqr/stringer,nobuti/stringer,run-project/stringer,geemus/stringer,geemus/stringer,adscott/stringer,nibble/stringer,jeroenj/stringer,dperson/stringer,thiagosil/stringer