Fix #11

+ update README for config options + cron jobs

lib/Mojolicious/Command/cron/cleanbdd.pm

@@ -0,0 +1,38 @@
+package Mojolicious::Command::cron::cleanbdd;
+use Mojo::Base 'Mojolicious::Command';
+use LutimModel;
+use Mojo::Util qw(slurp decode);
+use Mojolicious::Plugin::Config;
+
+has description => 'Delete IP addresses from database after configured delay.';
+has usage => sub { shift->extract_usage };
+
+sub run {
+    my $c = shift;
+
+    my $config = Mojolicious::Plugin::Config->parse(decode('UTF-8', slurp 'lutim.conf'), 'lutim.conf');
+
+    $config->{keep_ip_during} = (defined($config->{keep_ip_during})) ? $config->{keep_ip_during} : 365;
+
+    my $separation = time() - $config->{keep_ip_during} * 86400;
+
+    LutimModel->do(
+        'UPDATE lutim SET created_by = "" WHERE path IS NOT NULL AND created_at < ?',
+        {},
+        $separation
+    );
+}
+
+=encoding utf8
+
+=head1 NAME
+
+Mojolicious::Command::cron::cleanbdd - Delete IP addresses from database after configured delay
+
+=head1 SYNOPSIS
+
+  Usage: script/lutim cron cleanbdd
+
+=cut
+
+1;