Added hostname action_mailer option to config
The first advise in the output of `rails g devise:install` was as follows
  1. Ensure you have defined default url options in your environments files. Here
     is an example of default_url_options appropriate for a development environment
     in config/environments/development.rb:

       config.action_mailer.default_url_options = { :host => 'localhost:3000' }

     In production, :host should be set to the actual host of your application.
Added welcome#index as the root route.
The second advise in the output of `rails g devise:install` was
  2. Ensure you have defined root_url to *something* in your config/routes.rb.
     For example:

       root :to => "home#index"
rails g controller welcome index
Added the controller pointed to by the route.
placeholders for notice and alerts in app layout
Third advise from `rails g devise:install` was
  3. Ensure you have flash messages in app/views/layouts/application.html.erb.
     For example:

       <p class="notice"><%= notice %></p>
       <p class="alert"><%= alert %></p>
rails g devise user
rake db:migrate
Added Feedback about Being Logged In.