Multi Phase JSON Initialization
Feature in Python 3.5 that should simplify instantiation of the JSON module and make it more "pythonic"

https://docs.python.org/3/c-api/module.html?highlight=multi%20phase#multi-phase-initialization
https://www.python.org/dev/peps/pep-0489/

Also removed a version string from within the extension, as I don't see where that is useful
