Updated setup.py to indicate that it runs on Python 3.4+
Merge pull request #271 from agronholm/master

Updated setup.py to indicate that it runs on Python 3.4+
Allow whitelisting the CDN for trusting the X-Forwarded-* headers
Merge pull request #272 from dstufft/x-forwarded

Allow whitelisting the CDN for trusting the X-Forwarded-* headers