text: Title: Include source distribution
  Body: According to https://pypi.org/project/flask-rest-api/#files this library currently only provides wheels to PyPI. Best practice is to upload source distributions as well. Fixing should just be a matter of running `python setup.py sdist upload`.
  
  Thanks for maintaining flask-rest-api, hope to try it soon! (Would have tried it already if not for this issue, which makes it harder for me to use it on some internal infrastructure.)