updating readme to reflect railtie changes
updating readme to reflect railtie changes

petercip/mongoid3_session_store,petercip/mongoid3_session_store,iwazer/mongoid_session_store,codebrew/mongoid_session_store,iwazer/mongoid_session_store,codebrew/mongoid_session_store,codebrew/mongoid_session_store,iwazer/mongoid_session_store