Updated FAQ (markdown)

FAQ.md

@@ -45,3 +45,13 @@ for zsh:
 These two scripts above can be used for pre-warm `.zlua` database.
 
 
+## Define your own -I behavior
+
+Define a new `zf2` shell function to override `z -I`:
+
+```bash
+function zf2() {
+    local $dest="$(z -l "$@" | fzf --nth 2 --reverse --inline-info --tac +s -e --height 35%)"
+    [ -n "$dest" ] && cd "$dest"
+}
+```