The following optional AppD fields are generally used only when publishing in an "App Catalog":
title: string Optional title for the application. tooltip: string Optional tooltip description. description: string Optional long form description. images: array of images Optional array of images to display in App Catalog. contactEmail: string Optional e-mail to receive queries about the application supportEmail: string Optional e-mail to receive support requests for the application publisher: string The name of the company that owns the application. customConfig: array An optional set of name value pairs that can be used to deliver custom data from an App Directory to a launcher.