Better README.md for dlang.org

[Mike via Digitalmars-d]

On Monday, 19 January 2015 at 23:14:11 UTC, Andrei Alexandrescu 
wrote:
> https://github.com/D-Programming-Language/dlang.org/blob/master/README.md
>
> 1. If instructions don't work for you, reply here.
>
> 2. Additions for Windows would be welcome. FWIW I think the 
> Windows makefile suffers from a bit of bitrot.
>

https://issues.dlang.org/show_bug.cgi?id=13436 can probably be 
closed.  I added a few additional suggestions to that issue, but 
I'm joyed just to something that works.  Thank you.

Mike