Include the app's duplicated framework.

By my understanding of the readme, this should work, but it's not. It
looks like the framework duplication mentioned in the readme isn't
happening:

/Users/ben/code/lotus-test/app.rb:15:in `<module:Home>': uninitialized constant OneFile::Controller (NameError)
  from /Users/ben/code/lotus-test/app.rb:14:in `<module:Controllers>'
  from /Users/ben/code/lotus-test/app.rb:13:in `<module:OneFile>'
  from /Users/ben/code/lotus-test/app.rb:4:in `<top (required)>'
  from /Users/ben/code/lotus-test/config.ru:4:in `require'
  from /Users/ben/code/lotus-test/config.ru:4:in `block in <main>'
  from /Users/ben/code/lotus-test/vendor/bundle/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
  [...]