Updated qrencode documentation, adding SYMBOL VERSIONS section
Updated qrencode documentation, adding SYMBOL VERSIONS section

mazoRen/libqrencode,fukuchi/libqrencode,fuhangbo/libqrencode,UniQP/libqrencode,fuhangbo/libqrencode,alexrao/libqrencode,tklauser/libqrencode,UniQP/libqrencode,mazoRen/libqrencode,alexrao/libqrencode,tklauser/libqrencode,fukuchi/libqrencode,UniQP/libqrencode,sballe73/libqrencode,sballe73/libqrencode,jaybinhe/libqrencode,UniQP/libqrencode,sballe73/libqrencode,jaybinhe/libqrencode,alexrao/libqrencode,alexrao/libqrencode,sballe73/libqrencode,mazoRen/libqrencode,tklauser/libqrencode,fuhangbo/libqrencode,jaybinhe/libqrencode,mazoRen/libqrencode,tklauser/libqrencode,jaybinhe/libqrencode,fukuchi/libqrencode