First Component.html

<!doctype html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<title>First Component</title>
	<script src="http://fb.me/react-0.12.2.js"></script>
	<script src="http://fb.me/JSXTransformer-0.12.2.js"></script>
</head>
<body>
	<script type="text/jsx">
		/* @jsx React.DOM*/
		var APP = React.createClass({
			render: function() {
				return (
					<h1>Hello World</h1>
				)
			}
		});
		React.renderComponent(<APP />, document.body);
	</script>
</body>
</html>