Implement adaptors.

src/js/adaptor/global.js

@@ -0,0 +1,11 @@
+/* Copyright (c) 2015 Hyunje Alex Jun and other contributors
+ * Licensed under the MIT License
+ */
+'use strict';
+
+var ps = require('../plugin/ps');
+
+window.PerfectScrollbar = ps;
+if (typeof window.Ps === 'undefined') {
+  window.Ps = ps;
+}

src/js/adaptor/jquery.js

@@ -3,8 +3,8 @@
  */
 'use strict';
 
-var ps = require('./plugin/ps')
-  , psInstances = require('./plugin/instances');
+var ps = require('../plugin/ps')
+  , psInstances = require('../plugin/instances');
 
 $.fn.perfectScrollbar = function (settingOrCommand) {
   return this.each(function () {