Ruby on Rails single sign on across multiple applications(naveenagarwal287.wordpress.com)

http://naveenagarwal287.wordpress.com/2013/07/01/ruby-on-rails-single-sign-on-across-multiple-applications/?goback=%2Enpv_27362659_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1%2Egmr_22413%2Egde_22413_member_254565455