Install Restful Authentication

Steps:

1. Under project folder, run "script/plugin source http://svn.techno-weenie.net/projects/plugins/"
2. Under project folder, run "script/plugin install restful_authentication"
3. Under project folder, run "script/generate authenticated user sessions"
4. Inside route.rb, add "map.activate '/activate/:activation_code', :controller => 'users', :action => 'activate', :activation_code => nil"
5. Inside route.rb, add "map.signup '/signup', :controller => 'users', :action => 'new'"
6. Inside route.rb, add "map.login '/login', :controller => 'sessions', :action => 'new'"
7. Inside route.rb, add "map.logout '/logout', :controller => 'sessions', :action => 'destroy'"
8. Under project folder, run "rake db:migrate"
9. Inside, app controller, add "include AuthenticatedSystem" to application controller
10. Inside, app controller, add "before_filter :login_required" to controller requiring authentication