Merge branch 'hotfix/fix-always-raises-error' into develop
added gunicorn config
restructured project layout
added functional tests
added json schema validation
refactored backends to use _make_request method
added handling for validation errors
fixed linting errors, mostly added docstrings
Added content to readme
fixed urls, reponse codes
updated tests for changed urls, response codes
updated ci settings
updated requirements and commented them
Merge branch 'release/v0.2.0'
corrected readme formatting
Export settings in ci
added fake data for testing
fixed travis error
Added badges to readme
added pythonpath