Finalizing the OS X doku (in-progress)

Hi Roman,

you can of course, but you usually should not accept pull requests, immediately.
The usual way is to chat about it, and to agree how to continue.

Until a pull request is accepted, I can modify it many times.
And this is what I'm gonna do right now:
- Add the stuff that is meant to be the new OS X section,
- wait for you input and modify stuff.

It will be ready, later tonite. I will tell you when I think to be finished.
Until then, your work is easier if you look into 

    https://github.com/ctismer/pyside-setup

and maybe add comments, before you accept.

But you also may continue as you are used to work. I was just telling you what
I leaned about pull requests from the Zope people, when I worked on the ZODB.

cheers - Chris