This extension makes it so Markdown files show all their headings and subheadings right inside Solution Explorer.
Note: this is still a preliminary proof-of-concept thing. It doesn't dynamically change the list when you add or remove headings. To achieve that you have to press the Refresh button.
That's all there is! There is no more! Apparently 280 characters is the minimum length of description for this kind of thing. But if you make something simple enough, it doesn't really need a long description does it?