ReadMe updated: HAL Link added

README.md

 # Progressive Layer-based Compression for Convolutional Spiking Neural Network 
-Here you find the code for the paper `Progressive Layer-based Compression for Convolutional Spiking Neural Network`
+Here you find the code for the paper `Progressive Layer-based Compression for Convolutional Spiking Neural Network` ([link](https://hal.archives-ouvertes.fr/hal-03826823))
 ## Requirement
 
 * C++ compiler (version >= 14)