Use pg instead of sqlite3
Add Guard & Spork
Add a full_title helper
Use bootstrap, add contact page, add header & footer, modify routes, improve RSpec
Add login page, controller, route, link & test
Add User model(name, email), annotate, validation
Add password to User
Set debug information, make users as a resource, test the user show page with factories
Add Gravatar image and sidebar
Signup form, error messages, success flash message
Add SSL in production
Login & logout: add remember_token, links, create session, cookie
Add cucumber
Add user edit feature
Authorization
Add all users page(users/index)
Use Faker to add 100 sample users
Add pagination to users/index
Refactor user/index
Add admin boolean to User