Update README.md

Add summary and usage instructions

README.md

@@ -105,3 +105,23 @@ configs:
   - split: train
     path: strains/train-*
 ---
+
+# Dataset Summary
+
+**TEA – Pathogen Identifier & Strain Tagger** is a curated biomedical corpus with  
+505 full-text articles curated for human microbial pathogens and 400 articles on microbial strains.  
+Over 3,500 entity spans are annotated in IOB2 format.
+
+**Usage**
+```python
+from datasets import load_dataset
+pathogens_ds = load_dataset("tznurmin/tea_curated", "pathogens", split="train")
+strains_ds = load_dataset("tznurmin/tea_curated", "strains", split="train")
+print(pathogens_ds[152])
+print(len(strains_ds))
+```
+
+## More information
+
+  <https://github.com/tznurmin/TEA_curated_data>
+