Wiki up at github

[Iain Buclaw]

Morning all,

I've done a flat copy of all immediately addressable wiki pages 
from bitbucket over to github.


https://github.com/D-Programming-GDC/GDC/wiki

There are some alterations that may be required, especially on 
the "how to build" bits that are on most pages. I will have time 
to look at them later, but would be grateful if any of the 
original contributors would update their bits first.

Regards
Iain