Update uhfreader288m.py

[stivehu]

If need to read tid then must be set the adrTid and the lenTid parameters.

[wabson]

Thanks for the contribution @stivehu, this looks really great and I'll try and test it out this week.

Do you have any information on the adrTid and lenTid parameters, as I should really add some explanation in some class doc now that the number of supported parameters is growing.