add useful and used scripts

.local/bin/statusbar/sb-mpdup

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# This loop will update the mpd statusbar module whenever a command changes the
+# music player's status. mpd must be running on X's start for this to work.
+
+while : ; do
+	mpc idle >/dev/null && kill -45 "$(pidof "${STATUSBAR:-i3blocks}")" || break
+done