Adding the view/controller for Things

By adding the title:string option to the generate command, my forms
include the :title attribute of Thing.

NOTE: At this point the tests are broken for two reasons:

1) the command does not add the appropriate route
2) the Fedora objects created in the controller are not being cleaned up

Commands:
$ rails generate scaffold_controller Things title:string
Adding :things resource

This creates the necessary CRUD action for Things

You can see what was created by running `rake routes`; This shows all of
the routes available to the application. Not the various /things routes.
Replacing Thing.last with controller variable

ActiveFedora::Base does not implement the .last method; As such we need
to change how that is being done.