This question is probably asking the same thing, but it's not clear and I don't want to change the intent of his question. So I'll ask a new one and make it clear my intent.
I have a repository that includes image assets for an iPhone app.
I'd like the designers at my company to be able to commit new images into the repository. But I don't want them to have to use command line git or SourceTree or similar.
GitHub.com allows you to edit text files through the browser and commit those changes to the repository. Is there any way to do the same thing through the GitHub website, but for non-text files (e.g. Images.)
If there isn't a way to do it that's officially supported by GitHub, is there any third party site that makes this possible through the GitHub API?