Run JS examples

Shouldn't we create a HTML file called `index.html` in the same directory as each JS file which just runs the JS code ?

Like this one :
```html
<!DOCTYPE html>
<html>
	<head>
		<title>JS Example</title>
		<script type="text/javascript" src="_JS-FILE_.js"></script>
	</head>

	<body></body>
</html>
```
