Migration from Express 2.5 to Express 3.0

Express.createServer(); is deprecated

migrated to
var App = Express();

App.address() not available anymore.
Merge pull request #2 from sfrenot/Upgrade-Express-2.5-3.0

Migration from Express 2.5 to Express 3.0
Update app.js
Merge pull request #1 from nodebits/master

maj