5.7 함께 보면 좋은 자료
• 익스프레스 공식 홈페이지: http://expressjs.com
• 넌적스 공식 홈페이지: https://mozilla.github.io/nunjucks
• morgan: https://github.com/expressjs/morgan
• body-parser: https://github.com/expressjs/body-parser
• cookie-parser: https://github.com/expressjs/cookie-parser
• static: https://github.com/expressjs/serve-static
• express-session: https://github.com/expressjs/session
• multer: https://github.com/expressjs/multer