don't update rubygems on travis-ci rubygems 2.0 seems not to be compatible with rbx removed ruby-head build (ruby 2.0 is tested instead)
don't update rubygems on travis-ci
rubygems 2.0 seems not to be compatible with rbx
removed ruby-head build (ruby 2.0 is tested instead)

WebEnrich/rolify,sopheak-se/rolify,RolifyCommunity/rolify,jayshreeanand/rolify,cwingate/rolify,jfilip/rolify,gohuygo/rolify