Adding badge

README.md

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 [![build](https://github.com/databrickslabs/geoscan/actions/workflows/push.yml/badge.svg?style=for-the-badge)](https://github.com/databrickslabs/geoscan/actions/workflows/push.yml) 
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 *DBSCAN (density-based spatial clustering of applications with noise) is a clustering technique used to group points that
 are closely packed together. Compared to other clustering methodologies, it doesn't require you to indicate the number