Add some documentation about the documentation

README.md

@@ -1 +1,11 @@
-TODO: document the documentation
+You can run this locally with `docker compose up`
+
+If you have a `~/.puma-dev/bndocs` file that has the port from the docker
+compose file you can see it at `http://bndocs.test`, otherwise it should be at
+`http://localhost:4567`
+
+You can run the build inside the container (if it is running) with `docker
+compose exec web bin/build`
+
+Pushing to github's master will deploy the site to
+`https://developers.betternow.org`