check if the RUBY_ENGINE exists because ruby 1.8 doesn't provide it refs #21
check if the RUBY_ENGINE exists because ruby 1.8 doesn't provide it
refs #21

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