Update facility.md

Only major change: played with list of project types and removed the specific ones. I think they're off-putting to, say, a typical craft artist:

* LARP (Live Action Role Play);
  * Cosplaying and gaming;
  * Amateur Radio & Communications;


Also removed claim that "We also have
access to a 5000sqft Warehouse for experiments, subject to availability, as
well as the entire outside area of the business park, kindly offered by Weavers Court" - unfair claim, I think.