Perform exercise 1 : add a test for email capitalization
Exercise 2: rewrite downcase method in User model
Exercise 3: Improve regex to validate email address
Add debug output
Add minimum show action

- Add show action on Users controller
- Add routing for User#show
Introduce FatoryGirl gem
Add Factory, add title and heading, add test
Add cost factor

- Add cost factor to test.rb to recude the testing time.
Add Gravatar icon and sidebar to User show page
- Add Gravatar icons to User show page
- Add sidebar to User show page
Add style to User show page
Add a test for signup page

- Add a test for sign up page on user.spec.rb
Add @user variable to new action

- Add @user variable to new action
- Fix mix-in error in custom.css.scss
Revise create action in User controller using Strong Parameters
Implement error message on signup failure
Implement saving user and redirection on signup
Add flash message on signup success/failure
Fix password fuzzification and News link
- Make password field on Signup fuzzify.
- Fix the link to Tutlrial news on _footer.