Update README.md

Model Description.

README.md

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-license: cc-by-nc-2.0
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+# GBLM-Pruner-LLaMA-1-13B Model Card
+
+## Model details
+
+**Model type:**
+GBLM-Pruner-LLaMA-1-13B is an open-source compressed model obtained by unstructured pruning of 50 percent of the weights of the LLaMA-1-13B model. 
+
+## License
+Non-commercial bespoke license
+
+**Where to send questions or comments about the model:**
+https://github.com/RocktimJyotiDas/GBLM-Pruner/issues