added conditional section documentation
Fixed typos.

Fixed the conditional-section example and added a test for it.

Added some more details about option overridding.
Merge pull request #104 from buildout/jim-condition-section-doc

added conditional section documentation
Woo hoo! We don't need the special windows restart on update anymore!

This is weird, platform.python_version_tuple() returns a tuple of ints
on Python 2.6 on windows.
sigh, map returns an iterator on Python 3
update
tweek
prep for release
Fixed several tiny typos.
Merge pull request #109 from pombredanne/master_typos

Fixed several tiny typos.
Added placeholder for next release so people feel comfortable adding
change entries.
prep for release.
prep for dev
fix typo in test
pull from upstream