Update License

README.md

@@ -71,4 +71,7 @@ Please use the following BibTeX entry if you use this model in your project:
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 ## Ethical Statement
-While promising, the results in this work should not be interpreted as a definitive assessment of the performance of hate speech detection in Italian. We are unsure if our model can maintain a stable and fair precision across the different targets and categories. HATE-ITA might overlook some sensible details, which practitioners should treat with care. 
+While promising, the results in this work should not be interpreted as a definitive assessment of the performance of hate speech detection in Italian. We are unsure if our model can maintain a stable and fair precision across the different targets and categories. HATE-ITA might overlook some sensible details, which practitioners should treat with care. 
+
+## License 
+[GNU GPLv3](https://choosealicense.com/licenses/gpl-3.0/)