I wish programmers would also follow this advice when creating their GitHub repositories and project sites because they can suffer the very same problem.

It's pretty often I hear about a library or project, hit its homepage, and I can't figure out what the heck it even is without digging around.

The magic phrase, as used in this article, is "[thing] is [describe thing]". Tell me the name of your thing and what it is. Once you've got that paragraph out of the way, you can go to town!