Update README.md

Dataset loading example

README.md

@@ -2,8 +2,14 @@
 license: afl-3.0
 ---
 
+## Description
+
 An adaptation of [eHealth-KD Challenge 2020 dataset](https://knowledge-learning.github.io/ehealthkd-2020/), filtered only for the task of NER. Some adaptation of the original dataset have been made:
 
 - BIO annotations
 - Errors fixing
 - Overlapped entities has been processed as a unique entity
+
+## Dataset loading
+
+datasets = load_dataset('json', data_files={'train': ['@YOUR_PATH@/training_anns_bio.json'], 'testing': ['@YOUR_PATH@/testing_anns_bio.json'], 'validation': ['@YOUR_PATH@/development_anns_bio.json']})