def authenticated?(password)
      if password_object == password
        update_hash!(password) if password_object.stale?
        return true
      end

      return false
    end
def authenticated?(password)
      if password_object == password
        update_hash!(password) if password_object.stale?
        return true
      end

      return false
    end
Return true if password matches the hashed_password.
 If successful checks for an outdated password_hash and updates if
 necessary.