Merge pull request #30 from rayshih/master

[bug fix] fix crash problem while booting server
[update packages] should->3.3.1
v0.18.4
[update packages] body-parser->1.2.0, cli-color->0.3.2, cookie-parser->1.1.0, connect-mongo->0.4.1, connect-multiparty->1.0.3, csurf->1.2.0, errorhandler->1.0.1, express->4.3.1, express-session->1.2.0, method-override->1.0.2, mongoose->3.8.11, serve-favicon->2.0.0, serve-static->1.1.0, should->3.3.2
[refactoring] add removed connect middlewares
[refactoring] adopt express 4 changes
[refactoring] merge production logs to one file ( coke.log )
[refactoring] split cookie secret from session
v0.19.0
[refactoring] use proper status code in application controller
[new feature] ability to use model outside of the application scope
v0.20.0
[bug fix] add missing middlewares in generator
v0.20.1
[bug fix] typo
v0.20.0
[bug fix] add missing middlewares in generator
v0.20.3
[bug fix] add serve-favicon and serve-static todependencies
v0.20.4