Getting http://localhost:3000/pictures to work
Making pictures show at /pictures
Making each picture show at its own URL using static routes
Refactoring Step #4 to use dynamic routes
Adding feature to create new picture using HTML form
Refactoring Step #6 to use Form helpers
Creating Picture model in database
Moving @pictures in pictures_controller.rb into database
Refactoring to save new pictures in database
Refactoring views to use helpers and adding navigation
Adding feature to edit pictures
Adding feature to delete pictures
Changing db in production to pg