[Hamlib-stationserver] Updated Requirements Doc

[Art B. <ac...@in...>]

A small update is online at <http://sourceforge.net/projects/hamlib/files/stationserver/documents/requirements/StationServer%20Requirements%20DRAFT%202.pdf/download>

I hope everyone who can will take a few minutes to look it over and comment.

Thanks!

- Art KD6O