Enable Python 3.4 testing on Travis.
Add PyPI version classifiers.
Fix PEP8 failure on 3.4.

With 3.4, the self.assertRaisesRegexp is converted to
self.assertRaisesRegex, and the continuation line no longer lines up.
Merge pull request #102 from QuLogic/python3.4

Enable Python 3.4 testing on Travis.