pushy.go
func (p *Pushy) NotificationStatus(pushID string) (*NotificationStatus, *Error, error) {
	url := fmt.Sprintf("%s/pushes/%s?api_key=%s", p.APIEndpoint, pushID, p.APIToken)
	var errResponse *Error
	var status *NotificationStatus
	err := get(p.httpClient, url, &status, &errResponse)
	return status, errResponse, err
}
func (p *Pushy) NotificationStatus(pushID string) (*NotificationStatus, *Error, error) {
	url := fmt.Sprintf("%s/pushes/%s?api_key=%s", p.APIEndpoint, pushID, p.APIToken)
	var errResponse *Error
	var status *NotificationStatus
	err := get(p.httpClient, url, &status, &errResponse)
	return status, errResponse, err
}
// NotificationStatus returns status of a particular notification