## application
### start server
*development*
```js
node www/development.js
```
*testing*
```js
node www/testing.js
```
*production*
```js
node www/production.js
```
or use pm2 to manage node:
```
pm2 start www/production.js
```
### compile es6 code
```
npm run compile
```
### how to link resource
*in template file*
```html
```
*link image in css*
```css
.a{
background: url(../img/a.png) no-repeat;
}
```