Combining server and client directories

This commit combines /server and /client into a single express app, serving static files (css/js) from /public and implementing [Handlebars](http://handlebarsjs.com) for templating in the /views directory.  

UPDATED: commit 19aeead adds the proxy route to the mapquest API
I don't think you meant to commit this file with your app key in it.  Need to add this file to .gitignore