customerio.go
func (c *CustomerIO) Delete(customerID string) error {
	status, responseBody, err := c.request("DELETE", c.customerURL(customerID), []byte{})

	if err != nil {
		return err
	} else if status != 200 {
		return &CustomerIOError{status, c.customerURL(customerID), responseBody}
	}

	return nil
}
func (c *CustomerIO) Delete(customerID string) error {
	status, responseBody, err := c.request("DELETE", c.customerURL(customerID), []byte{})

	if err != nil {
		return err
	} else if status != 200 {
		return &CustomerIOError{status, c.customerURL(customerID), responseBody}
	}

	return nil
}
// Delete deletes a customer