It is all Here
Don't copy manually, use the generator
rails generate devise:views
All needed views will be generated under app/views/devise
As for the controllers, create them under app/controllers
class RegistrationsController < Devise::RegistrationsController
end
or
class SessionsController < Devise::SessionsController
end
and change routes.rb
to point them:
devise_for :admins, :controllers => { :sessions => "<YOUR_SESSION_CONTROLLER>", :registrations => "<YOUR_REGISTRATION_CONTROLLER>"}