Fixed ruby version list in travis yaml
Fixed ruby version list in travis yaml

10fish/octopress,zachbrowne/octopress,octopress/octopress,zachbrowne/octopress,xiongjungit/octopress-blog,TobiasChe/octopress,beni55/octopress,beni55/octopress,samarpanda/octopress,SciRuby/sciruby.com,electronspin/octopress,Hyaena/octopress3,Hyaena/octopress3,hazzik/octopress,hazzik/octopress,SciRuby/sciruby.com,dougbeal/octopress,dougbeal/octopress,taoger/octopress,shekarrex/octopress,SciRuby/sciruby.com,TobiasChe/octopress,shekarrex/octopress,electronspin/octopress,octopress/octopress,taoger/octopress,HiWong/octopress,samarpanda/octopress,HiWong/octopress,xiongjungit/octopress-blog