fix: updating eventListener code

demo/eventing.js

@@ -1,12 +1,3 @@
-import ReactDOM from 'react-dom';
-import React    from 'react';
+import CoachMark from "../index";
 
-import { default as Component } from '../index';
-
-
-document.body.addEventListener('o.InitComponent', e => {
-  ReactDOM.render(
-    React.createElement(Component, e.detail.props, e.detail.props.children)
-    , document.getElementById(e.detail.elementId)
-  );
-});
+document.body.addEventListener('o.InitCoachMark', e => new CoachMark(e.detail));