Multi site support

[nblumoe]

Hey, I tried the plugin, as well as the CLI version to export one of the sites from my self-hosted multi-site Wordpress instance.

When running the plugin, I had the to be exported site active in the Wordpress web UI.
The CLI tool I ran from: /var/www/wp-content/plugins/wordpress-to-hugo-exporter

The exporter finishes and produces a valid zip.
Here is the head of the folder from the produced zip:

$ tree ~/Downloads/hugo-export
/Users/abc/Downloads/hugo-export
├── config.yaml
├── posts
│   └── 2014-03-02-hello-world.md
├── sample-page
│   └── index.md
└── wp-content
    └── uploads
        └── sites
            ├── 3
            │   ├── 2012
            │   │   ├── 04
            │   │   │   ├── inpulse_pebble_combo3-100x100.jpg
            │   │   │   ├── inpulse_pebble_combo3-150x150.jpg
            │   │   │   ├── inpulse_pebble_combo3-300x168.jpg

It has the upload folders for all sites and no additional folders:

$ tree ~/Downloads/hugo-export -L 4
/Users/abc/Downloads/hugo-export
├── config.yaml
├── posts
│   └── 2014-03-02-hello-world.md
├── sample-page
│   └── index.md
└── wp-content
    └── uploads
        └── sites
            ├── 3
            ├── 5
            ├── 6
            └── 9

All posts seem to be missing, just the uploaded assets are found in the folders listed above.
The config.yaml includes data for the multi-site root, but not any specific site.

Does the export have multi-site support? If yes, how does it have to be used?
If not, is there a chance to add it or provide some guidance on a hacky way?

Thanks a lot for providing the exporter!