[Cython] Installing on Windows

[Francesco Guerrieri]

Hello,

I have added on the wiki a short tutorial on installing cython on
windows, based on my experience.
I thought it was useful to collect the steps on the wiki. Please check
for the contents to see if I
misunderstood something (the steps described have actually worked for
me but maybe I was in some
corner case and didn't know that :) )

I put a link to the page under the section
Cython installers

bye
Francesco