If you can see this, React is not working right. This is probably because you're viewing
this on your file system instead of a web server.
Try navigating to the React root
cd /path/to/reactand running
python -m SimpleHTTPServerand going to http://localhost:8000/examples/basic-jsx-external/.
This is written with JSX in a separate file and transformed in the browser.
Learn more about React at facebook.github.io/react.