docs: update README.md

README.md

@@ -8,6 +8,7 @@ integrating with bots and other automated systems that require accurate and secu
 [![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=orenlab_pyoutlineapi&metric=sqale_rating)](https://sonarcloud.io/summary/new_code?id=orenlab_pyoutlineapi)
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 ## Features