Add Perl6 version

perl6/test.p6

@@ -0,0 +1,16 @@
+#!/usr/bin/env perl6
+
+use v6;
+use Test;
+use lib 'lib';
+
+use GildedRose;
+use Item;
+
+my $item = Item.new(:name<foo>);
+my $app = GildedRose.new(items => ($item));
+
+$app.update_quality();
+is $app.items[0].name, 'fixme', "first day pass";
+
+done-testing;