Add sitemap.xml option

[zelphir]

If you want to generate a sitemap.xml for your static website you can do this in the package.json, like this:

"homepage": "https://mycoolwebsite.com/",
"reactSnap": {
  "sitemap": true
}

Without the homepage a sitemap can't be generated.

[stereobooster]

At the moment I'm trying to write proper tests for the package. It was without tests way too long. This means, that all other PRs will be on hold. See #171

[tzi]

Thanks for this! It would be great to check if the pages forbid robots indexation (via <meta name="robots" content="noindex" />) before adding them to the sitemap. Cheers

[neo]

Is this going anywhere any time soon?

[adrianObel]

This would be great to have. Is the feature coming any time soon?

[zedtux]

I'm looking for this feature too ! #171 is merged, any chance @zelphir you could update this PR? 🙏