Add 'Best Practices' to the README per the guardian review.
Remove the NOTICE as it is not needed: If your repository contains only Amazon-originated content and you are not publishing your project any other way and only referencing third-party contents as part of package manager config files (package.json, requirements.txt, pom.xml etc) you do not need to create a third party notices file. Ref: https://w.amazon.com/bin/view/Open_Source/LicensingForGitHubProjects/MIT-0
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