Ported klein to run on the latest werkzeug release.

The latest werkzeug uses unicode for various bits of the response, instead of
str (bytes).
Removed the usage of mirrors in ``pip install`` from the travis config

With the improvements to PyPI's reliability and performance mirrors now
represent a reliability, performance, and security disadvantage.
Merge pull request #21 from alex/latest-werkzeug

Ported klein to run on the latest werkzeug release.
Merge branch 'master' into no-mirrors
Merge pull request #22 from alex/no-mirrors

Removed the usage of mirrors in ``pip install`` from the travis config
Prep 0.2.1 release.
Merge branch 'master' into finished-requests

Conflicts:
	klein/test_resource.py