Stop using rubygems update on travis.
Stop using rubygems update on travis.

mojarra/myrefinerycms,stefanspicer/refinerycms,refinery/refinerycms,mkaplan9/refinerycms,johanb/refinerycms,mobilityhouse/refinerycms,anitagraham/refinerycms,refinery/refinerycms,SmartMedia/refinerycms-with-custom-icons,hoopla-software/refinerycms,kappiah/refinerycms,mabras/refinerycms,bricesanchez/refinerycms,simi/refinerycms,johanb/refinerycms,kappiah/refinerycms,kelkoo-services/refinerycms,mabras/refinerycms,anitagraham/refinerycms,gwagener/refinerycms,mlinfoot/refinerycms,trevornez/refinerycms,KingLemuel/refinerycms,aguzubiaga/refinerycms,trevornez/refinerycms,aguzubiaga/refinerycms,mlinfoot/refinerycms,chrise86/refinerycms,stefanspicer/refinerycms,Retimont/refinerycms,kelkoo-services/refinerycms,LytayTOUCH/refinerycms,stefanspicer/refinerycms,bryanmtl/g-refinerycms,simi/refinerycms,kappiah/refinerycms,chrise86/refinerycms,hoopla-software/refinerycms,mkaplan9/refinerycms,aguzubiaga/refinerycms,bryanmtl/g-refinerycms,johanb/refinerycms,Retimont/refinerycms,louim/refinerycms,LytayTOUCH/refinerycms,mabras/refinerycms,Retimont/refinerycms,mojarra/myrefinerycms,sideci-sample/sideci-sample-refinerycms,KingLemuel/refinerycms,mobilityhouse/refinerycms,chrise86/refinerycms,LytayTOUCH/refinerycms,hoopla-software/refinerycms,Eric-Guo/refinerycms,Eric-Guo/refinerycms,Eric-Guo/refinerycms,gwagener/refinerycms,mkaplan9/refinerycms,louim/refinerycms,refinery/refinerycms,trevornez/refinerycms,simi/refinerycms,anitagraham/refinerycms,bricesanchez/refinerycms,SmartMedia/refinerycms-with-custom-icons,mlinfoot/refinerycms,sideci-sample/sideci-sample-refinerycms,gwagener/refinerycms,KingLemuel/refinerycms,simi/refinerycms