Adds Ruby 2.0 as a testable version of Ruby in Travis
Adds Ruby 2.0 as a testable version of Ruby in Travis

LabSEC/omniauth-cas,identification-io/omniauth-cas,ikbear/omniauth-cas,CruGlobal/omniauth-cas,1dtouch/omniauth-cas,dlindahl/omniauth-cas,tduehr/omniauth-cas3,txstate-etc/omniauth-cas