Add the mallet js file

unpublishedScripts/marketplace/xylophone/xylophoneMallet.js

@@ -0,0 +1,25 @@
+//
+//  xylophoneMallet.js
+//
+//  Created by Johnathan Franck on 07/30/2017
+//  Copyright 2017 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+
+(function() {
+    function XylophoneMallet() {
+    }
+
+    XylophoneMallet.prototype = {
+        startEquip: function(entityID, args) {
+            var LEFT_HAND = 0;
+            var RIGHT_HAND = 1;
+            var userData = JSON.parse(Entities.getEntityProperties(entityID, 'userData').userData);
+            userData.hand = args[0] === "left" ? LEFT_HAND : RIGHT_HAND;
+            Entities.editEntity(entityID, {userData: JSON.stringify(userData)});
+        }
+    };
+
+    return new XylophoneMallet();
+});