I need a responsive website. I would like it designed and built. I want to create a group buying website and app. It will be a clone to groupon website. Customers must be able to navigate easily and click and pay through paypal. Once payment received they will receive invoice and qr code. They wil use the qr code at the merchants. Merchant will get a merchant app and it must be able to scan and redeem the vouchers which customer flash.