Add README to NuGet

[jdhmtl]

Description

Add README to packaged library. Closes #6

Type of Change

• [ ] Bug Fix
• [ ] New Feature
• [ ] Breaking Change
• [ ] Refactor
• [x] Documentation
• [ ] Other (please describe)

Checklist

• [x] I have read the contributing guidelines
• [x] Existing issues have been referenced (where applicable)
• [x] I have verified this change is not present in other open pull requests
• [ ] Functionality is documented
• [x] All code style checks pass
• [ ] New code contribution is covered by automated tests
• [x] All new and existing tests pass

[codecov[bot]]

Codecov Report

Merging #16 (4e79827) into main (2b70394) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #16   +/-   ##
=======================================
  Coverage   50.97%   50.97%           
=======================================
  Files          44       44           
  Lines        1389     1389           
  Branches       60       60           
=======================================
  Hits          708      708           
  Misses        668      668           
  Partials       13       13           

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