A very basic documentation and/or a few simple examples

[sgmihai]

Would love to use this for my first API project, but having no documentation is not really encouraging for beginners.
I could find no projects that make use of this as well.
Please try to provide the bare minimum. Thanks.

[LNSD]

@sgmihai The nim-presto library is used in nimbus and nwaku projects.

You can find some usage examples in the nwaku codebase: https://github.com/status-im/nwaku/tree/master/waku/v2/node/rest