Where is the documentation?

If you go to the [java docs](https://google.github.io/truth/api/0.42/) you're left with 0 indication where to start - just a jumble of classpaths. Clicking on any of those 3 main packages is just as bad - no indication of where to go. And the website has no guide at all, just some marketing info and links to the java docs.

The javadocs by themselves are *not* documentation - they're a glossary. This project needs full well organized docs that put some effort into describing how to use Truth in a way that makes it easy to learn and to refer to later. It should take me 10 seconds to figure out what operators `assertThat` has and what other major constructs Truth provides. Going to the javadocs and seeing 100 classes organized alphabetically does nothing to help teach me how this system works or can be used.

So how about some actual documentation?