Restful authentication
Set up restful authentication for rails
cd site-root/vendors/plugins
svn export http://svn.techno-weenie.net/projects/plugins/restful_authentication/
cd ../../
script/generate authenticated user sessions --include-activation
# add this line to /config/environment.rb
config.active_record.observers = :user_observer
# add the resource routes in config/routes.rb.
map.resources :users, :sessions
# activate the changes in the database
rake db:migrate