~/.bin/select-display: Allow defaulting to external display

.bin/select-display

@@ -17,6 +17,13 @@ case "$display" in
	"")
		# don't change anything
		;;
	external)
		# select external display if one is available
		external="$(echo "$options" | grep -v 'LVDS1\|auto')"
		if [ -n "$external" ]; then
			select-display "$external"
		fi
		;;
	"auto")
		xrandr --auto
		;;