Russian translation
Signed-off-by: Alex Ivanov <ai@contributor.pw>
diff --git a/README.md b/README.md
index 6d365c6..e358f09 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,6 @@
The zip file will be located in the `out` folder.
+## Testing notes
+
+To test translations, you might want to set your browser's locale. This section tells you how to set the locale in [Windows](https://developer.chrome.com/extensions/i18n#testing-win), [Mac OS X](https://developer.chrome.com/extensions/i18n#testing-mac), [Linux](https://developer.chrome.com/extensions/i18n#testing-linux), and [Chrome OS](https://developer.chrome.com/extensions/i18n#testing-chromeos).