Add support for Python 3 PB generation
PEP8
Add support for uploading Python 3.3 version
Pyflakes
Use print_function in Python 2 for consistency
Add supported Python 2.6, 2.7, 3.3 and 3.4 version numbers
Merge pull request #104 from basho/feature/bch/python3

Add support for Python 3

Reviewed-by: seancribbs