[PATCH] dtas-graph: add a short blurb about what it does

[Eric Wong]

It's a pretty useful tool :)
---
 perl/dtas-graph | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/perl/dtas-graph b/perl/dtas-graph
index b243086..5bf7295 100755
--- a/perl/dtas-graph
+++ b/perl/dtas-graph
@@ -1,6 +1,10 @@
 #!/usr/bin/perl -w
-# Copyright (C) 2013-2016 all contributors <address@hidden>
+# Copyright (C) 2013-2016, 2019 all contributors <address@hidden>
 # License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
+#
+# Process visualizer which shows pipe connections between processes with
+# ASCII art.  Useful for displaying complex interations between different
+# processes in a non-traditional pipeline.
 use strict;
 use Graph::Easy; # for ASCII-art graphs
 $^O =~ /linux/ or print STDERR "$0 probably only works on Linux...\n";