Add example usage to README using `samples`

[Mec-iS]

Using the sample data. Add to the README a command example to use the parser.

[de-sh]

Hey @Mec-iS. I am interested in this. What do you mean by

command example to use the parser

does the parser need a CLI?

[Mec-iS]

yes, the parser should have a CLI.

What I meant is to add a code example in the README.

[de-sh]

On this, but I would love to know how to design the CLI. Opening an issue to discuss that.