handle OS signals

package main

import (
	"os"
	"os/signal"
	"syscall"
)

func main() {

	Start()

	c := make(chan os.Signal, 1)
	signal.Notify(c, syscall.SIGINT, syscall.SIGHUP)

	for sig := range c {
		switch sig {
		case syscall.SIGINT:
			Stop()
			return
		case syscall.SIGHUP:
			Stop()
			Start()
		}
	}
}