Overriding Devise's registration controller to allow for a redirect after a successful sign_up has been done

I have looked all over the place, and found a lot of info... but nothing works for me and I don't get it :(

I know that you are suppose to override the registration controller, like this:

class Users::RegistrationsController < Devise::RegistrationsController

def after_sign_up_path_for(resource)
  authors_waiting_path
end 

end

Then following the example showed by Tony Amoyal http://www.tonyamoyal.com/2010/07/28/rails-authentication-with-devise-and-cancan-customizing-devise-controllers/, I am supposed to change my routes to update the access the new controller:

devise_for :users, :controllers => { :registrations => "users/registrations" } do
#get '/author/sign_up', :to => 'devise/registrations#new'
#get '/client/sign_up', :to => 'devise/registrations#new'  
get '/author/sign_up', :to => 'users/registrations#new'
get '/client/sign_up', :to => 'users/registrations#new'      
end

Yes, I have something a bit strange here, because I am catching some specific path to send them to the registration page, this allows me to create effectively 2 registration scenario. I commented what I had before I had overridden the registration controller.

Even with all this and my authors_waiting_path being a valid path, it just keeps on going to the sign-in page after registration :(

This is really frustrating.

Alex

edit: I also found this on the devise wiki: https://github.com/plataformatec/devise/wiki/How-To:-Redirect-after-registration-(sign-up)

But I have no idea where to define this create method ? should I override the session controller ???

edit 2:

I