Merge pull request #10 from pydanny/fix-generate-json

fix generating of json to target the correct file
Fix broken test after JSON dir change.
Release 0.4.1.
Fix Python shebang.
Add feature allowing you to use the Complexity API.
Fix link.
Expand Complexity as a library docs.
Fix to contributor instructions.
Add Troubleshooting section to docs to help beginners.
Fix link to Requests in credits.
Reference Troubleshooting from Installation doc.
Add PyPy to list of supported Pythons.
More detail about how to contribute.
For py2/3 compatibility, input = raw_input. Thanks @regebro :first_quarter_moon_with_face:
Make json/ dir optional.
Change test for json_dir change to generate_context().
Release 0.4.2
More docstrings.
Flake8 cleanup.
Fix incorrect docstring info.