coinbase.go
func (c Client) ResendRequest(id string) (bool, error) {
	holder := map[string]interface{}{}
	if err := c.Put("transactions/"+id+"/resend_request", nil, &holder); err != nil {
		return false, err
	}
	if holder["success"].(bool) {
		return true, nil
	}
	return false, nil
}
func (c Client) ResendRequest(id string) (bool, error) {
	holder := map[string]interface{}{}
	if err := c.Put("transactions/"+id+"/resend_request", nil, &holder); err != nil {
		return false, err
	}
	if holder["success"].(bool) {
		return true, nil
	}
	return false, nil
}
// ResendRequest resends a transaction request referenced by id