Added minor updates to README. No functional changes were made since the last release.
To use in CircuitPython, simply install the [CircuitPython Community Bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install circuitpython-csv`.
Read the [docs](https://circuitpython-csv.readthedocs.io/en/latest/) for info on how to use it.