add test about email downcase transfer
add debug print to html and debug style to css
add user resource to route
add foctory girl to gemfile
add factory for user and test for user profile page
add user page html
add profile page to user controller
speed up test by lowering bcrypt cost factor
add gravatar to user profile page
update user profile page layout and style
add signup test, html, and new controller
update signup page. add error message on invalid user
add welcom message with flash
Merge branch 'sign-up'