Add volume increment setting capability.

M  README
   Expanded.
M  vlm
   Add INC argument to increase and decrease sub-commands.
   Expand usage information output.

1 files changed, 18 insertions, 2 deletions

diff --git a/README b/README
index cc9db35..f813246 100644
--- a/README
+++ b/README
@@ -1,2 +1,18 @@
-The vlm script helps the user to easily set keyboard shortcuts to
-control pulseaudio volume, mute and switch pulseaudio output.
\ No newline at end of file
+The vlm script provides elementary sound control actions to set
+pulseaudio volume, mute or unmute sound and cycle through pulseaudio
+outputs, such that actions performed through this script will probably
+achieve sane results on all systems using pulseaudio. The script does
+not need any configuration from the user to perform its actions.
+
+It is provided so that the user can bind the script's actions to
+keyboard shortcuts of his choosing, and have those shortcuts trigger
+easy and consistent sound control actions.
+
+Because the script's capabilities are not exhaustive, and because it
+does not provide any output about their effects, it can not replace a
+full-blown sound mixer program.
+
+The script uses the pactl program to determine the currently active
+pulseaudio sink, then uses the same command again to perform its action.
+
+For usage information, type the command vlm without any argument.