Update README.md

README.md

@@ -57,6 +57,10 @@ It improves performance on clinical text similarity, retrieval, and interpretati
 ```bash
 # Only transformers is needed!
 pip install transformers torch
+
+## Recommended
+pip install git+https://github.com/lukeingawesome/llm2vec4cxr.git #python=3.8
+
 ```
 
 ### Basic Usage