TF:U2,L5,A5, Step 5 - creating db
created and migrated Category model
modified category.rb, removing validation of content and categories so that I could load the database with rake db:seed
changes to app/models/article.rb and app/models/category.rb apparently not saved before clsoing down last time
TF:U3,L2,A1 - created app/controllers/articles_controller.rb file, modified routes, and added new view files for index, new, and show
TF:U3,L2,A2 - committing changes to app/controllers/articles_controller.rb, app/views/articles - index and show files
U3,L2,A2 - changes to 'new' and 'create' and '_form'