= UseCase10 - Sign-up
** Initiating actor: Guest ** 
== Description
A new guest(that doesn't have an account) want to be able to do restricted functions. The guest must sign-up first and when he does he is allowed to do everything a client can.
== Scenario
1. Clicks on the sign-up button.
2. Fills in the form.
3. Submits it.
{{{
INSERT INTO users (username, email, name, surname, password_hash, created_at)
VALUES (
  'client.nina',
  'nina.client@petify.com',
  'Nina',
  'Ristova',
  'hash_test_123',
  NOW()
)
RETURNING user_id;
}}}