func sendBroadcastSample(c client.Client) error {
	return c.Send("/gcm/broadcast", "general offer", "{id:id}")
}
func sendMessageSample(c client.Client) error {
	return c.Send("topic", "personalized offer", "{id:id}")
}
func sendMessageSample(c client.Client) error {
	return c.Send(testTopic, "test-body", "{id:id}")
}