recording notification added, script fixes

.scripts/killrecording

@@ -0,0 +1,9 @@
+#!/bin/bash
+# I'm not quite sure why, but a new non-recording instance of ffmpeg will start after
+# being killed the first time, so the core command here runs twice after a break.
+pkill -P $(pgrep -x screencast\|audio\|video) 2>/dev/null && sleep .5 &&
+pkill -P $(pgrep -x screencast\|audio\|video) 2>/dev/null
+
+# Update i3bar.
+echo "" > ~/.scripts/.recording
+pkill -RTMIN+9 i3blocks