Update README.md

README.md

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 # website
+
 Website for The Carpentries in Japan
+
+## Translation
+
+The website uses [babelquarto](https://docs.ropensci.org/babelquarto/) to maintain translations.
+
+To locally render and view the translated website, run the following commands in R:
+
+```r
+library(babelquarto)
+library(servr)
+
+render_website()
+httw("docs")
+```
+
+Alternatively, source the `render_serve.R` [file](R/render_serve.R).
+
+## License
+
+swcarpentry-ja.github.io is licensed under a
+[Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/).