*NEW gruntfile added for easy demoapp development
*NEW starting the notfication server with grunt
*CHG using default redis port by default
*CHG remove unused task
*CHG widget refactoring
*FIX gruntfile typo
Notification server refactoring

Refactoring node.js server app using express and coffee-script.
Modified gitignore file
Moving notification-server.coffee under src/
Refactoring: notification api