[Gpsbabel-misc] Doc updates

[Robert L. <rob...@us...>]

When GPSBabel was simple, a simple text README sufficed. Unfortunately,
that quit being true a long time ago. Building on the work that Dave
Pawson started by moving our words to Docbook, Ron Parker has recently
done a trainload of work on our documentation and has greatly improved
the formatting, consistency, and quality of our doc.

You can see the current fruits of this labor at:

  http://www.gpsbabel.org/htmldoc-development/readme.html

...but you might not want to make that a long-term bookmark. My master
plan is to start putting "frozen" versions of the doc on the web so
that a user of GPSBabel 1.3.0 can always find online doc that matches
GPSBabel 1.3.0 while those using development versions can find a similar
version for something closer to the development action.

If you have suggested specific improvements for your favorite format or
section, please send them to the gpsbabel-code list. If you can provide
it as a patch to the docbook code, great, but if you provide words ready
to drop in, we can format an integrate them.

RJL