Is it possible to build multiple bundles using CLI?

If I need to build multiple bundles from multiple entries (1-1 entry to output bundle), is it possible to specify using single `rollup.config.js` or should I use the API? I would like something like this

``` js
// rollup.config.js
export default [{
  entry: 'src/foo.js',
  dest: 'dist/foo.js'
}, {
  entry: 'src/bar.js',
  dest: 'dist/bar.js'
}]]
```

Thanks for great tool!
