i'm using the version 3, but i have a book that covers rails 4. please tell me a way to easy install it! Attachments: http://www.ruby-forum.com/attachment/10036/Screenshot_from_2014-09-01_23_45_05.png -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/7eba1f7495e840ae2580071d838ef502%40ruby-forum.com. For more options, visit https://groups.google.com/d/optout.