Packaging, deploying, and distributing apps
When you create a package, you create a bundled file that contains all of the files needed to deploy (or share) the application.
Packaging involves identifying the required files, organizing those files, and creating a the package file. Different targets (the GAS, a mobile device, a zip file) have different file requirements; it is your responsibility to identify what files are needed for the target and include them in the package.
Genero Studio eases the packaging - and eventual deployment of your application for testing - by enabling you to build your package from within your project.