[Rails3] Rails 3 app in one file

Hi,

I've tried to run config.ru file provided by Yehuda Katz:
http://gist.github.com/330207

After running it and pointing browser to localhost:3000/foo I get
"RoutingError: uninitialized contant FooController" error.

Have anyone else tried it? Is there anything more to add?

My Gemfile is one liner:
gem 'rails', :git => "git://github.com/rails/rails.git"