Docs

[chenjr0719]

This is a WIP pull request about new docs.

TODOs:

• Decorators
• Fields
• API Factory
• Examples
• Update CONTRIBUTING.md about how to build doc at local
• Update README.md

You can check this WIP doc on readthedocs at here.

EDIT: This PR also bump the version to 0.6.0 and ready to release to PyPI.

[codecov-io]

Codecov Report

Merging #122 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #122   +/-   ##
=======================================
  Coverage   95.54%   95.54%           
=======================================
  Files           4        4           
  Lines         449      449           
  Branches       95       95           
=======================================
  Hits          429      429           
  Misses          6        6           
  Partials       14       14

Impacted Files	Coverage Δ
sanic_openapi/__init__.py	100% <100%> (ø)	⬆️

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[chenjr0719]

@ahopkins Please review this PR. This PR not only contains new docs and also bump the version to prepare release the 0.6.0 on PyPI and Readthedocs.

[chenjr0719]

@huge-success/sanic-open-api Is there anyone can review this PR? I want to release the new version to PyPI.