I've updated class and example files.
It seems that bookmark is only available for specifci devices, because syntax seems to be ok.
nttdocomo.co.jp/english/service/dev
...
It also depends how QR reader softare interprets it.
And I've fixed Wifi QR, but I don't have android right near me to test it. Hopefully, it should work.
Please let me know, if I could be in any more use ;)