update README

[chengzhuzhang]

Add acknowledgement and LLNL release code.

[codecov-commenter]

Codecov Report

Merging #127 (11888b4) into main (21dad38) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #127   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines          336       336           
=========================================
  Hits           336       336           

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[chengzhuzhang]

@tomvothecoder hey, i fixed the pre-commit error, but now stuck with a build error not sure how to fix...

[tomvothecoder]

Thanks for this PR Jill. It looks like a codecov report uploading issue, which I'll handle.

[tomvothecoder]

I added some minor fixes and badges to the README.rst.

The codecov uploader issue is being addressed right now. We can wait until it is fixed before merging.
Related issue: codecov/codecov-action#557

[pochedls]

I think this README looks good. Ideally in the future we will be able to include and welcome external contributions.

[chengzhuzhang]

Thank you @tomvothecoder. @pochedls Yes, I think so too!