Added the language list to README

README.md

@@ -258,6 +258,7 @@ To learn more about the Nightscout API, visit https://YOUR-SITE.com/api-docs.htm
   * `SHOW_PLUGINS` - enabled plugins that should have their visualizations shown, defaults to all enabled
   * `SHOW_FORECAST` (`ar2`) - plugin forecasts that should be shown by default, supports space delimited values such as `"ar2 openaps"`
   * `LANGUAGE` (`en`) - language of Nightscout. If not available english is used
+    * Currently supported language codes are: bg (Български), cs (Čeština), de (Deutsch), dk (Dansk), el (Ελληνικά), en (English), es (Español), fi (Suomi), fr (Français), he (עברית), hr (Hrvatski), it (Italiano), ko (한국어), nb (Norsk (Bokmål)), nl (Nederlands), pl (Polski), pt (Português (Brasil)), ro (Română), ru (Русский), sk (Slovenčina), sv (Svenska), zh_cn (中文（简体)), zh_tw (中文（繁體))
   * `SCALE_Y` (`log`) - The type of scaling used for the Y axis of the charts system wide.
     * The default `log` (logarithmic) option will let you see more detail towards the lower range, while still showing the full CGM range.
     * The `linear` option has equidistant tick marks, the range used is dynamic so that space at the top of chart isn't wasted.