Added support for Balance

Added support for Balance while keeping backward compatibillity

.gitignore

@@ -20,3 +20,4 @@ obj/
 
 # Ignore Mac DS_Store files
 .DS_Store
+npm-debug.log

lib/actions/equalizer.js

@@ -10,7 +10,16 @@ function speechEnhancement(player, values) {
   return player.speechEnhancement(enable);
 }
 
+function balance(player, values) {
+
+  const balance = parseInt(values[0]);
+
+  return player.setBalance(balance);
+
+}
+
 module.exports = function (api) {
   api.registerAction('nightmode', nightMode);
   api.registerAction('speechenhancement', speechEnhancement);
+  api.registerAction('balance', balance);
 }

lib/actions/volume.js

@@ -1,7 +1,8 @@
 'use strict';
 function volume(player, values) {
   var volume = values[0];
-  return player.setVolume(volume);
+  var channel = values[1] || 'Master';
+  return player.setVolume(volume, channel);
 }
 
 function groupVolume(player, values) {