* A few uploading PC softwares are listed to lower the barrier for a new
player finding such. This is *never* going to be an exhaustive list.
* Added section listing console options for contributing data. Again,
not intended to be exhaustive.
* Layout/sections tweaked. Hopefully the use of double horizontal rules
emphasises which section text is a part of.
* Expand the initial blurb into a full 'About' section.
* Making 'Using EDDN' an actual section, to facilitate migrating away
from the wiki page.
* Guide players towards some useful information (guide and sites).
* Ensure developers know to check the *live* documentation.
* Explicitly link to the current wiki page and EDDN status.
* Add 'Hosting of the live service' section, and only list the current
situation (Vivio hosting is 4-5 years ago now, and Anthor's was never
called out).
