Added an addition IDNA spec.
Added an addition IDNA spec.

EiNSTeiN-/addressable,107191613/addressable,davidbegin/addressable,mislav/addressable,sferik/addressable,Envek/addressable,iainbeeston/addressable,sporkmonger/addressable,shaicoleman/addressable,rkh/addressable,Hacker0x01/addressable