Install Devise
`rails generate devise Helper`
`rake db:migrate`
Add helper signup/login links in the header that work with Devise

http://railscasts.com/episodes/209-devise-revised
Configure Devise views and turn scoped views on

Run `rails generate devise:views helpers`
http://devise.plataformatec.com.br/#getting-started/configuring-views
Change the wording of signup, signin, and signout in views and routes

'Sign Up'  => 'Become a Professional'
'Sign In'  => 'Log In'
'Sign Out' => 'Log Out'