How can i add a config?

[shalldie]

For example , i init like this:

app.use(views(path.join(__dirname, 'views'), {
    map: { html: 'nunjucks' }
}));

But where do i add the nunjucks' config?

[int64ago]

Here's an example: https://github.com/queckezz/koa-views/blob/master/test/index.js#L277

[shalldie]

Thanks a lot.
:D