Adding an Express server as a convenient Node wrapper.

I could not seem to get PhantomJS to run as a daemon on my production server. This led to some serious thrashing until I discovered https://github.com/sgentle/phantomjs-node

phantomjs-node does some magic to wrap PhantomJS up as regular node.js module that can be required like any other. 

The result is an Express server that can be daemonized easily using forever or pm2.