URL gets namespace prepended when Jeckle::Resource is within a namespace

Let's say I have this class:
```ruby
module MyApi
  module Models
    module Car
      include Jeckle::Resource

      attribute :model
      attribute :color
      attribute :year
    end
  end
end
```

Whenever I try to find a car, the endpoint is generated with the namespace on it, e.g. `/my_api_models_cars/38`.

I think the ideal would be to not have the namespace prepended, like this: `/cars/38`.