Update windows installation and other notes

[Ivoz]

Making allowance for new convenience of get-pip.py that automatically installs setuptools and pip together.

Stop recommending distribute, which has now been merged into setuptools.

[kennethreitz]

This looks great!

I'd be very wary of fully removing the ;C:\Python27\Scripts part, though. We'll leave it for now and see how it goes.

Generally, I wonder how people would feel about just outsourcing this part of the documentation to Python-Guide?

http://docs.python-guide.org/en/latest/starting/install/win/

[Ivoz]

I'd be very wary of fully removing the ;C:\Python27\Scripts part, though. We'll leave it for now and see how it goes.

IMHO this should be solved by having pip added to the path, which is why the part on win_add2path.py is mentioned immediately after.

Generally, I wonder how people would feel about just outsourcing this part of the documentation to Python-Guide?

I could see arguments both directions; but apart from that, if you were to outsource this I'd suggest pointing to http://packaging.python.org (which, by the way is up on github and ofc welcomes any issues/PRs if you see any inadequacies)

Cheers!