Merge pull request #14 from Soulou/master

Fix firefox error on @import
Completed README.md
Merge pull request #16 from bluke/readme

Completer README
Send ragot with 'caps + enter'
Add coffeescript dependency
Ajax request on submit and error notification
Add CSS to manage error and loading
Application compatibility without Javascript
Use compile_assets to have a unique JS file
Use less selector and type insteed of ID
Use zepti.js lib (lightweight JQuery lib)
Fix CSS syntax to be cleaner
Small animation to create when creating a new ragot
Add socket.io and its initialization
Externalize redisClient initalization
Use a ragot model to clean the code
Client-side socket.io utilization instead of ajax
Add websocket server-side
Websocket on current URL instead of localhost
Don't broadcast errors !