Looking for a document management system for .story / .ppta / .quiz / .pptx / .zip files (e.g. git hub?)

Github works great with files and folders. As Storyline is a packaged set of files you can unzip the .story and add that to Github. That works great and you can do a lot with it. However to open your Storyline again you have to download the complete folder and zip it again and change the extension to .story