Latest install instructions do not properly install pytak

[XPav]

Following the install instruction on Ubuntu via the .deb file route does not result in a working install.

Everything seems to install, but adsbcot complains about the pytak module not being available. I can see the pytak folder in the right spot, but python3 can't pick it up.

Doing a pytak install via pip, followed by installing adsbcot from source did work.