Add SIGHUP support

Fixes #352

signals.go

@@ -14,6 +14,7 @@ func setupSignals() {
 
 	signals = make(chan os.Signal, 1)
 	signal.Notify(signals, syscall.SIGUSR1)
+	signal.Notify(signals, syscall.SIGHUP)
 
 	go watchForSignals()
 }
@@ -23,11 +24,16 @@ func watchForSignals() {
 
 	for {
 		sig := <-signals
-		if sig == syscall.SIGUSR1 {
+		switch sig {
+		case syscall.SIGUSR1:
 			log.Println("caught USR1 signal")
 
 			reloadAllHooks()
-		} else {
+		case syscall.SIGHUP:
+			log.Println("caught HUP signal")
+
+			reloadAllHooks()
+		default:
 			log.Printf("caught unhandled signal %+v\n", sig)
 		}
 	}