devise install and initial config

I added Devise gem to 'Gemfile' and ran bundle install. I then ran rails g devise:install which created the following files: "config/initializers/devise.rb" and  "config/locales/devise.en.yml". I followed the set-up instructions regarding the "config/environments/development.rb" file, and added the flash messages to the app layout view. I added the 'config.assets.initialize_on_precompile = false' to the 'config/application.rb' file as suggested by the set up instructions, and had a look online and saw that from Rails 3.2, there is a problem with Rails seeing Devise, whether this is is a problem I do not know.

I ran ' rails g devise user' which generated:
invoke  active_record
      create    db/migrate/20130823143349_devise_create_users.rb
      create    app/models/user.rb
      invoke    test_unit
      create      test/models/user_test.rb
      create      test/fixtures/users.yml
      insert    app/models/user.rb
       route  devise_for :users

modified the migrate file and user model file to what settings I want to implement.