Readme update bundled/dependancies #14
Description
After I ripped out some vendorised packages (IIRC some more work can be done here, I didn't update the readme).
- review/finalize dependancies / bundled (vendorised) packages
- update readme to reflect changes (e.g. python 3 is WIP/"supported")
- discuss state of some e.g. PyWordNet... NLTK; pdfminer(s)
This may also need to be updated in the docs too.