Example of namespacing modules and classes

totally agree but if your top level is a class and then you namespace everything else within a folder (i.e. inheritance with logical grouping of classes and subclasses) then you do have to do `class Foo::Bar` e.g.
``` ruby
# models/foo.rb
class Foo
end

#models/foo/bar.rb
class Foo::Bar < Foo
end
```

not always that simple :smile: