Add example endpoints

[nathanclevenger]

Put some example endpoints in both the API object inside the header, as well as in the readme.

We will set up a GitHub Action that will generate a standard template for the README, so that the README can be generated automatically with consistent boilerplate including Drivly information ... but this isn't finalized. So for now, just keep the readme short and sweet, with a couple of example links and example responses that show how it works.