Added logo and updated README

Author: Trel725

README.md

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 # Quiddity InsightHub
 
+<div align="center">
+<p align="center">
+  <a href="https://quiddityai.com"><img src="https://raw.githubusercontent.com/quiddityAI/InsightHub/main/docs/docs/img/quiddity_logo_blue_pink.png" alt="Quiddity InsightHub"></a>
+</p>
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+[Running app](https://absclust.com/v2) — [Documentation](https://docs.quiddityai.com)
+</div>
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 This is a Python-Django-backend, Vue-frontend tool to visualize, search, organize and extract data.
 
 As of April 2025, this is the **only open source (and even proprietary) tool** that combines: