user_nav

- if user_signed_in?   
  Usuario:
  = current_user.username
  %br
  No sos vos?
  %br  
  = link_to "Salir", destroy_user_session_path
  = link_to "Perfil", edit_user_registration_path
- else
  = link_to "Registrarte", new_user_registration_path  
  = link_to "Conectarte", new_user_session_path