Implement file structure

[syabro]

Use structure from, https://github.com/TriplePoint-Software/django-data-models
It should look like

.
..
drf_swagger_yaml/
tests/
.gitignore
bump_version.py
pylintrc
runtests.py
setup.py

./bump_version should generate version to setup.py, 'sdist upload' lines must be commented.