Stale pypi package

[vguttmann]

There's a package called kafka instead of kafka-python on pypi that also points to this repo, and its newest version is from 2017.

Since it's pretty old, there should probably be a warning about it being deprecated and stale, if not outright deleted.

[vguttmann]

Preferably though it should just be kept up-to-date with kafka-python, since there are STILL something like 10,000+ downloads for that package