Updates the details for an administrator.

def update(self, new_email_address, name):
        """Updates the details for an administrator."""
        params = {"email": self.email_address}
        body = {
            "EmailAddress": new_email_address,
            "Name": name}
        response = self._put("/admins.json",
                             body=json.dumps(body), params=params)
        # Update self.email_address, so this object can continue to be used
        # reliably
        self.email_address = new_email_address