Add tools for usb wifi dealie

Just spent a long ass time trying to get my netgear wnda3100v2 usb wifi
adapter to work with ubuntu. There was a very specific version of
ndiswrapper and of the actual windows driver (which was hard to find) that
are required for it to work. I'm adding it here so that I don't have to
suffer through it again.
Add README for wifi driver

Since the whole point of this is to save myself some time in the future
I might as well add a document that explains what to actually do with all
these files.