Update README for small model

README.md

@@ -46,6 +46,10 @@ a fast character-based sentence and paragraph boundary detection system optimize
 
 ## Usage
 
+> **Important:** When loading models from Hugging Face Hub, you must set `trust_model=True` to allow loading custom class types.
+> 
+> **Security Note:** The ONNX model variants are recommended in security-sensitive environments as they don't require bypassing skops security measures with `trust_model=True`. See the [ONNX versions](https://huggingface.co/alea-institute/charboundary-small-onnx) for a safer alternative.
+
 ```python
 from huggingface_hub import hf_hub_download
 from charboundary import TextSegmenter
@@ -53,8 +57,8 @@ from charboundary import TextSegmenter
 # Download the model
 model_path = hf_hub_download(repo_id="alea-institute/charboundary-small", filename="model.pkl")
 
-# Load the model
-segmenter = TextSegmenter.load(model_path)
+# Load the model (trust_model=True is required when loading from external sources)
+segmenter = TextSegmenter.load(model_path, trust_model=True)
 
 # Use the model
 text = "This is a test sentence. Here's another one!"