Zero-Storage II: The Lost Years

This pull request brings to life @smholloway's feedback on PR #16.

**Edit:** This pull request replaces python-oauth2 and it's gross `/(http|url)lib\d?/` cohorts with the excellent [Requests](http://www.python-requests.org/en/latest/) library. It also brings in [nose](http://nose.readthedocs.org/en/latest/) for running tests and [coverage](http://nedbatchelder.com/code/coverage/), which says that this pull request improves test coverage from ~85% to 100%.

Try it yourself: `nosetests --with-coverage --cover-package=toopher`