Adds ruby 2.1 to travis config.
Adds ruby 2.1 to travis config.

LukeWinikates/LicenseFinder,alexderz/LicenseFinder,bdshroyer/LicenseFinder,bspeck/LicenseFinder,bdshroyer/LicenseFinder,pivotal/LicenseFinder,pivotal/LicenseFinder,tinfoil/LicenseFinder,joemoore/LicenseFinder,chef/LicenseFinder,tinfoil/LicenseFinder,bspeck/LicenseFinder,bdshroyer/LicenseFinder,LukeWinikates/LicenseFinder,bdshroyer/LicenseFinder,bspeck/LicenseFinder,JasonMSwrve/LicenseFinder,alexderz/LicenseFinder,tinfoil/LicenseFinder,phusion/LicenseFinder,SimantovYousoufov/LicenseFinder,pivotal/LicenseFinder,phusion/LicenseFinder,LukeWinikates/LicenseFinder,joemoore/LicenseFinder,SimantovYousoufov/LicenseFinder,pivotal/LicenseFinder,joemoore/LicenseFinder,pivotal/LicenseFinder,LukeWinikates/LicenseFinder,pivotal/LicenseFinder,Swrve/LicenseFinder,SimantovYousoufov/LicenseFinder,tinfoil/LicenseFinder,SimantovYousoufov/LicenseFinder,JasonMSwrve/LicenseFinder,JasonMSwrve/LicenseFinder,joemoore/LicenseFinder,chef/LicenseFinder,LukeWinikates/LicenseFinder,JasonMSwrve/LicenseFinder,sschuberth/LicenseFinder,alexderz/LicenseFinder,pivotal/LicenseFinder,bspeck/LicenseFinder,sschuberth/LicenseFinder,alexderz/LicenseFinder,phusion/LicenseFinder,phusion/LicenseFinder,sschuberth/LicenseFinder,bdshroyer/LicenseFinder,sschuberth/LicenseFinder,tinfoil/LicenseFinder,chef/LicenseFinder,phusion/LicenseFinder,Swrve/LicenseFinder,SimantovYousoufov/LicenseFinder,sschuberth/LicenseFinder,joemoore/LicenseFinder,bspeck/LicenseFinder,JasonMSwrve/LicenseFinder,alexderz/LicenseFinder,chef/LicenseFinder