最新的使用方法：
Express application generator
參考以上連結，直接從這邊開始做即可：
$ npm install express-generator -g之後就可以直接用 express myApp 去生出一個網站，
等到 cd myApp，再 npm install 就會將 express 給安裝進來，
隨後即可用 npm start 執行 localhost Server。
以下的實驗記錄還能用，但是比較老舊的作法。
Refer to http://expressjs.com/ .
cd to the director of nodejs (where "node_modules" is contained)
$ npm install express
$ npm install express-generator
cd to the directory of express-generator (exprss-generator/bin)
$node ./bin/express -e microBlog ($node express -e microBlog)
, where -e means ejs template is used.
cd to the directory of microBlog
Then install dependencies:
$ npm install
Run the app (on MacOS or Linux):
$ DEBUG=microBlog npm start
On Windows, use this command:
> set DEBUG=microBlog:* & npm start
Then load http://localhost:3000/ in your browser to access the app.
The generated app directory structure looks like the following.
.
├── app.js
├── bin
│ └── www
├── package.json
├── public
│ ├── images
│ ├── javascripts
│ └── stylesheets
│ └── style.css
├── routes
│ ├── index.js
│ └── users.js
└── views
├── error.jade
├── index.jade
└── layout.jade
7 directories, 9 files