update readme

README.md

@@ -21,6 +21,10 @@ model-index:
       type: f_score
       value: 0.8924118449
 ---
+
+This is a XLNet model for Named Entity Recognition, fine-tuned on OntoNotes v5 using Spacy in coNLL-2003 format and BIO tagged. 
+For more details: https://github.com/nicoladisabato/ner-with-transformers
+
 | Feature | Description |
 | --- | --- |
 | **Name** | `en_xlnet_fine_tuned_ner` |