request: Add some examples to readme

Hi-- the repo looks really fascinating! Would you mind providing some quick, simple examples of how to invoke the parser on some basic examples, just to make diving into the code a bit easier?

Start by reading the README and locating how the parser is currently invoked in the repository. Add a few quick, simple examples using basic inputs, and consider the work done when a newcomer can follow the README examples to invoke the parser.

Written by the indexing model from the issue text.