installed testing gems ran gem update
Add StaticPages controller
add static pages spec test file
add users model and controller
respond_to name(RED)
respond_to name(GREEN)
responds_to surname(RED)
responds_to surname(GREEN)
responds_to email(RED)
responds_to email(GREEN)
invalid email format(RED)
invalid email format(GREEN)
email uniqueness(RED)
email uniqueness(GREEN)
email uniqueness case insensitive(RED)
email uniqueness case insensitive(GREEN)
added email uniqueness check at database level
downcase email addresses before_save
installed bycrypt gem
responds_to password_digest(RED)