Qrcode for #593

i've put the ignore list to queries like 'qr code reader' etc, let me know if that is enough or we ignore anything what follows these terms. Also i think we should move this from forever alone, to the goodies repo? :smiley: 
I think I'd like the list of words in there to be in an array:

```perl
my @skip_words = ('reader', 'generator', 'scanner', 'maker', 'creator', 'builder');
```