Add documentation to the README

Signed-off-by: Emanuele Feliziani <feliziani.emanuele@gmail.com>

README.md

@@ -178,3 +178,15 @@ Find the locale code for your language in the list below. The file can be found
 - vi_VN: Tiếng Việt (Việt Nam)
 - zh_CN: 中文 (中国)
 - zh_TW: 中文 (台灣)
+
+## Import translations from Smartling
+
+**Note:** This is only needed for DuckDuckGo employees. Community translators can ignore it 🙂.
+
+To import translations from Smartling:
+
+1. Unzip the output file
+2. From this folder, run `node ./adapt-translations-from-smartling.js`
+3. The script will ask for the location of the translated files. On macOS you can drag-drop the folder you just unzipped from Finder right to the terminal window
+4. Hit enter
+5. Review and commit 🎉