Add extracted source directory and README navigation

extracted-source/node_modules/@mixmark-io/domino/lib/UIEvent.js

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+"use strict";
+var Event = require('./Event');
+
+module.exports = UIEvent;
+
+function UIEvent() {
+  // Just use the superclass constructor to initialize
+  Event.call(this);
+  this.view = null; // FF uses the current window
+  this.detail = 0;
+}
+UIEvent.prototype = Object.create(Event.prototype, {
+  constructor: { value: UIEvent },
+  initUIEvent: { value: function(type, bubbles, cancelable, view, detail) {
+    this.initEvent(type, bubbles, cancelable);
+    this.view = view;
+    this.detail = detail;
+  }}
+});