Caregiver can feed adopted animal

Some of this logic can go to the model?

`@adoption.update_if_requirements_met`
in the mode
`def update_if_requirements_met`
`  if feed_counter <= 2`
`  update_attributes(score: (score + 25),
money_owed: (money_owed + 0.4),
feed_counter: (feed_counter += 1) `