Implemented data validation and deserialze
Implemented data validation and deserialze

NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions