This is the site at http://semver.org/ that describes the Semantic Versioning specification.

1. Create a new folder in lang/ with the appropriate language tag
2. Add a translated index.md to that folder
3. Add a translated spec/vX.X.X.md for the latest spec to that folder
4. Ensure all files have the appropriate title and language front matter (see others as an example)
5. Add the language to the _config.yml file