Trevor Dolby <trevor.dolby@googlemail.com>

Thanks to Francois Aucamp and everyone else who built python-gsmmodem, and
also to Michael Ashley <http://newt.phys.unsw.edu.au/~mcba/iridiumLinux.html>
for the documentation on how to get PPP working.

See https://github.com/babca/python-gsmmodem/blob/master/AUTHORS for the full
list of authors for python-gsmmodem, on which this project is based.