add routes to our routing table by modifying config/routes.rb
removed the public/index.html file so that our root route is used instead. Anything in public that will handle the request will skip the app (and our routing table).
added a welcome controller and hello action/view to handel our example custom route. This is also where our root route directs to. We are using the named scopes from the Student model in this controller. This was generated using
rails g controller Welcome
teaching about the flash hash, rendering different formats and views with different names
teaching about view helper modules, and link helpers
teaching about layouts and adding in a header partial
putting the added email column into the studnet form - teaching about form helpers