README: firefox settings

diff --git a/README.md b/README.md
index 4e324900efa46b72b722a73a644018332b7689d5..12cdd71b9d7cd70d79cd822e64d26c7f6877e305 100644 (file)
--- a/README.md
+++ b/README.md
@@ -79,3 +79,8 @@ Don't prompt to reset profile if unused for a little while:
 ```
 browser.disableResetPrompt = false
 ```
+
+Open links from external apps in new window:
+```
+browser.link.open_newwindow.override.external = 2
+```