Speed up tests on Windows
Merge pull request #155 from schlamar/speed-up-tests

Speed up tests on Windows
We know best if we support SNI.
Use pyOpenSSL if present.

This gives us SNI goodies on all Python versions.
Fix subjectAltName support.

The SNI/subjectAltName tests have a one big problem: They access the
great big, bad Internet, because I am not sure how to create the
correct certificates for this.

Also, this only works in all cases if pyasn1 and ndg-httpsclient are
installed (parsing DER-encoded binary data extracted from X.509
extensions is not my idea of fun.)
Remove URLLIB3_USE_PYOPENSSL env var.
Remove network-dependent SNI-test.
CamelCase for class name.
Adding tox and travis.
Add py3.3 and fix travis install command.
test all the versions
Merge pull request #161 from t-8ch/test_more_versions

Travis+tox: Test all the versions.
Move PyOpenSSL-backed SSL into contrib.
Tests for urllib3.contrib.pyopenssl.

This makes the SNI-test raise SkipTest if SNI is not supported, so
it can be reused by test.contrib.test_pyopenssl even when the stdlib
does not support SNI.

It also tests the urllib3.contrib.pyopenssl module when its
dependencies are installed, by re-exporting HTTPS test-cases and
using module-level setup/teardown code to monkey patch urllib3.
Documentation for the PyOpenSSL contrib module.
Add inject_into_urllib3 code snippet.
Merge pull request #156 from kirkeby/pyopenssl-for-sni

Optional PyOpenSSL for SNI-support on Python2.
CHANGES.rst += SNI support (#156)