Added optinoal pprof support

cmd/msgbusd/main.go

@@ -8,6 +8,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 
+	"github.com/mmcloughlin/professor"
 	"github.com/prologic/msgbus"
 )
 
@@ -43,6 +44,10 @@ func main() {
 		os.Exit(0)
 	}
 
+	if debug {
+		go professor.Launch(":6060")
+	}
+
 	opts := msgbus.Options{
 		BufferLength:   bufferLength,
 		MaxQueueSize:   maxQueueSize,