Function usage

examples/nats-rply/main.go:29–32

NOTE: Can test with demo servers. nats-rply -s demo.nats.io <subject> <response>

()

// nats-rply -s demo.nats.io <subject> <response>

func usage() {
	log.Printf("Usage: nats-rply [-s server] [-creds file] [-nkey file] [-t] [-q queue] <subject> <response>\n")
	flag.PrintDefaults()
}

func showUsageAndExit(exitcode int) {
	usage()