Support for json when ActiveRecord::Base.include_root_in_json is false

[kuon]

When ActiveRecord::Base.include_root_in_json is set to false, CappuccinoResource stops working.

The workaround is simple, all the "attributes = response[[self railsName]]" must be replace by "attributes = response".

Of course, a configuration option would be most welcome. I will see if I can create a patch.