Better build

Fix for #6 

Sorry about the second quite messy commit. Anyway, hopefully reduce your workload. The example you have should probably include one of react-with-addons files from: http://facebook.github.io/react/downloads.html (either keep a copy in repo or link it in from FB's CDN) - at least if you want a standalone example using the webback bundle-file (now renamed to something more appropriate).