Update README.md

Author: thecodedrift

README.md

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+  Deprecation Notice: With MongoDB retiring realm applications, this project will no longer fulfill its intended purpose. It's our hope the Mongo team will reintroduce HTTP APIs for their excellent document DB project
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   <span style="font-size:24px">🌿🕸️ Mongo Data API</span><br />
   <sub><i>Mongo Client for an HTTPS World. Lambda and edge function friendly</i></sub>