Create one Website to Reseller - System Food Delivery

I need a website for online sale of product delivery, i have a client who owns a pizzeria, he may sell the site with their pizzas online, or have a hot dog stand can also sell. As basic layout and structure sales [login to view URL] want this site Besides the need to site the customer has your app for IOS and Android Exclusive. Making the system in a way that for every new customer that I have just putting basic information I can change the whole site and application. Ie need this standalone system for resale. With admin panel for my client to change everything you need, promotions, prices, see all orders of the day, etc.. "How much simpler system for use with bold designs, altering colors, layout, may have 2 or 3 different layout options for the customer to choose, easy to install and best use"