Modify README and workflows

[kyosek]

Reference issue

What does this implement/fix?

Additional information

[codecov]

Codecov Report

Merging #21 (ff71751) into master (a4576bb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #21   +/-   ##
=======================================
  Coverage   93.12%   93.12%           
=======================================
  Files           5        5           
  Lines         262      262           
=======================================
  Hits          244      244           
  Misses         18       18           

[github-actions]

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Files not summarized due to errors (2)

Failed to summarize

• README.rst (nothing obtained from openai)
• .github/workflows/openai-pr-reviewer.yml (nothing obtained from openai)

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In the recent run, only the files that changed from the base of the PR and between a4576bb4aba2bcb6d0dbea06f175e6b2d5b58322 and ff71751b170c949e0473dfa7762fa6be34491800 commits were reviewed.

Files not reviewed due to errors in the recent run (2)

Failed to review in the last run

• .github/workflows/openai-pr-reviewer.yml (no response)
• README.rst (no response)