Add property for iTunes Affiliate code

[cameronehrlich]

[bickster]

Please add this functionality.

[napolux]

Doesn't make any sense. You're rating an app you're already running...

[cameronehrlich]

@napolux if you're iTunes affiliate code is included in the link to the store, you get a cut of anything they purchase within the next 24 hours. So for small time indie devs like myself, i'll take whatever revenue I can get ;)