update setup.py url
Merge branch 'master' of github.com:pytoolz/toolz
add keywords and description to setup.py
setup.py uses toolz.__version__

Fixes #29
remove pip install command for dependencies

In particular itertoolz and functoolz are no longer dependencies
setup.py: author points to AUTHORS.md

Add mrocklin as maintainer of package
Merge pull request #38 from mrocklin/update-setup

Update setup