add devise gem to gemfile
install devise
add root route to businses index
set action mailer default url to localhost:3000 in development environment
create user model with devise
db migrate
fix positioning of route for users
factory for user
test for user is valid with name and password
test for user is invalid without an email
test for user is invalid without a password
test for user is invalid with under 8 character password
add login, logout, signin and edit to application view
feature user management scenarios
test for user sign up
modify test for user sign up
move click link sign up to out of expect block
test for user login
test for user logout
test for edit a user