Update README.md

Add DOI and citation section

README.md

@@ -69,9 +69,22 @@ The following hyperparameters were used during training:
 | 0.4581        | 2.72  | 390  | 0.4719          | 0.8467   |
 | 0.3967        | 2.93  | 420  | 0.5023          | 0.8223   |
 
+## Citation
+
+```bibtex
+@misc {enrique_hernández_calabrés_2024,
+	author       = { {Enrique Hernández Calabrés} },
+	title        = { wav2vec2-lg-xlsr-en-speech-emotion-recognition (Revision 17cf17c) },
+	year         = 2024,
+	url          = { https://huggingface.co/ehcalabres/wav2vec2-lg-xlsr-en-speech-emotion-recognition },
+	doi          = { 10.57967/hf/2045 },
+	publisher    = { Hugging Face }
+}
+```
+
 ## Contact
 
-Any doubt, contact me on [Twitter](https://twitter.com/ehcalabres) (GitHub repo soon).
+Any doubt, contact me on [Twitter](https://twitter.com/ehcalabres).
 
 
 ### Framework versions