Extract python_to_json_syntax() from api_decorators -> utilities
Update requirements.txt to include pytest/pytest-cov
Create exceptions.py

Contains a single custom exception, MalformedJson
Add test files from another repo to get started.
Raise MalformedJson() when incoming request has bad JSON data.
Add `re` import
Return Flask json-based Response objects when various conditions of api_declaration() are not met.
Add unit tests covering basic functionality.
Get rid of code not being used.
Update .travis.yml / __init__.py