Add example on how to use post-processing scripts for sending custom notification when slicing is done.

utils/post-processing/prowl-notification.pl

@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+#
+# Example post-processing script for sending a Prowl notification upon
+# completion. See http://www.prowlapp.com/ for more info.
+
+use strict;
+use warnings;
+
+use File::Basename qw(basename);
+use WebService::Prowl;
+
+# set your Prowl API key here
+my $apikey = '';
+
+my $file = basename $ARGV[0];
+my $prowl = WebService::Prowl->new(apikey => $apikey);
+my %options = (application => 'Slic3r',
+               event =>'Slicing Done!',
+               description => "$file was successfully generated");
+printf STDERR "Error sending Prowl notification: %s\n", $prowl->error
+    unless $prowl->add(%options);