Add startup sound

modules/welcomer/index.js

@@ -8,6 +8,7 @@ module.exports = function (bot, api) {
         await api.joinChannel(channel);
         let conn=api.getConnectionForVoiceChannel(channel);
         api.queue=new AudioQueue(conn);
+        api.queue.add(__dirname + "/../../sysstart.wav");
         api.speak(channel, api.strings.WELCOME);
     })
 }