Add token based auth and update docs
ALlow token name customization
Tweak token name example
Tweak README design
Add settings.py to encapsulate watchman settings
Add `required_token` decorator tests
Code cleanup

* Remove unused imports
* Update decorator docstring
* Factor out token validation into it's own function
* Fix urlconf flake8 problem
* Tell flake8 to ignore E501 issues
Merge pull request #4 from mwarkentin/token-auth

Token based authentication for endpoint