Improved comments for volume block scripts

blocks.def/volume.sh

@@ -1,4 +1,7 @@
 #!/bin/sh
+# This script parses the output of `pacmd list-sinks' to find volume and mute
+# status of the default audio sink and whether headphones are plugged in or not
+# Also see ../daemons/pulse_daemon.sh
 pacmd list-sinks |
     awk '
         BEGIN {

daemons/pulse_daemon.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-# This script should be autostarted on startup
+# This script should be autostarted with X session
 # It signals volume block to update on audio related events
 pactl subscribe |
     while read -r output ; do