Update README.md

Author: nicolas-chaulet

README.md

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 # 3D Point Cloud Kernels
 Pytorch CPU and CUDA kernels for spatial search and interpolation for 3D point clouds.
 
-![Deploy](https://github.com/nicolas-chaulet/torch-points-kernels/workflows/Deploy/badge.svg) ![Unittests](https://github.com/nicolas-chaulet/torch-points-kernels/workflows/Unittests/badge.svg)
+[![PyPI version](https://badge.fury.io/py/torch-points-kernels.svg)](https://badge.fury.io/py/torch-points-kernels) ![Deploy](https://github.com/nicolas-chaulet/torch-points-kernels/workflows/Deploy/badge.svg) ![Unittests](https://github.com/nicolas-chaulet/torch-points-kernels/workflows/Unittests/badge.svg)
 
 ## Installation
 **Requires torch** version 1.0 or higher to be installed before proceeding. Once this is done, simply run