koajs/koala — pull request #2 by fengmk2 (2014-07-17 16:54:58+00:00)
Title: jsonp support

```js
var app = koala({
jsonp: {
callback: 'callback'
}
})

app.use(function* () {
this.jsonp = { name: 'fengmk2' }
})
```

* safe response

```
/**/ typeof fn === 'function' && fn({"foo":"bar"});
```