complete getSpecialsOffer for SpecialOffersManager

1) Complete method (NSArray*) getSpecialOffers:(SpecialOfferCity
*)forCity :(SpecialOfferCountry *)forCountry
2) add GUI for results view
Merge pull request #9 from BrandyMint/Special-Offers-getSpecialOffers

SpecialOffersManager getSpecialOffers method