Adding address with geocoder

I'm playing around with geocoder and googlemaps, and just wanted to see if you wanted to add it into your app.  Don't merge this yet, since there's a few things that are still a little buggy, and I'm still trying to figure out a few features (using javascript, getting directions, etc).  Let me know what you think!

(Also, the mailer and current visitor/analytics stuff is commented out for purposes of local testing)