TF:U3,L3,A4 - styled Wikiful using a Bootstrap generator, i.e., a theme
TF:U3,L4,A2 - create a user model
TF:U3,L4,A2 - created user model and sign-up form
TF:U3,L4,A3 - create sessions, login/logout, and authorization flow
added gem 'rails_12factor' so as to deploy to Heroku