The JSX Transformer library is not recommended for production use. Instead, you'll probably want to precompile your JSX into JavaScript.
Install:
npm install react-tools -g
Run:
jsx dev build --no-cache-dir --watch //watch dev dir and compile js to build dir
You also need to change html a little bit:
dev/index.html
<!doctype html>
<html lang="en">
<head>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" href="style.css"/>
<script src="//fb.me/react-0.13.3.js"></script>
<script src="//fb.me/JSXTransformer-0.13.3.js"></script>
<meta charset="utf-8">
<title>Compiler Dev</title>
</head>
<body>
<script type="text/jsx" src="app.js"></script>
</body>
</html>
build/index.html
<!doctype html>
<html lang="en">
<head>
<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" href="style.css"/>
<script src="//fb.me/react-0.13.3.js"></script>
<!-- no jsx file included-->
<meta charset="utf-8">
<title>Compiler Dev</title>
</head>
<body>
<!-- no type="jsx/text" -->
<script src="app.js"></script>
</body>
</html>