Adds duckmap example, closes #1720
Adds duckmap example, closes #1720

perl6/doc,MasterDuke17/doc,perl6/doc,tbrowder/doc,perl6/doc,MasterDuke17/doc,MasterDuke17/doc,MasterDuke17/doc,perl6/doc,tbrowder/doc,perl6/doc,tbrowder/doc,tbrowder/doc