Add example usage code in README

[rly]

The README file needs to be updated with example code demonstrating how to use the extension for a common use case.

Secondly, we should copy the example usage code into a unit test to ensure that the code works correctly even when the extension source code changes.

[mavaylon1]

@rly can't they refer to the notebook?

[oruebel]

I think the example in the README serves a different purpose than the notebook. The example in the readme should be short and sweat, just showing how simple it is to use the extension and what it can do. The notebook then goes into much more detail to do a step-by-step walkthrough.

[rly]

I agree with @oruebel . Something like https://github.com/rly/ndx-events and https://github.com/rly/ndx-csd and https://github.com/catalystneuro/ndx-sound

[mavaylon1]

20