port some code in express from js to coffeescript

port some code in express from js to coffeescript
I'm looking for ideas for the big picture of taiji.js, and almost get it.
it should be superset of express.js, complementary of angular.js, view is superset of jade
examples about socket.io

examples about socket.io from socket.io real-time web application development
some edit on gruntfile.coffee