Update README.md

README.md

@@ -67,6 +67,13 @@ And after it, add:
 [Once you are done the file should look like this](https://github.com/oobabooga/text-generation-webui/blob/473a57e35219c063d2fc230cfc7b5a118b448b38/modules/AutoGPTQ_loader.py#L33-L39)
 
 3. Then save and close the file, and launch text-generation-webui as described below
+4. Install and compile AutoGPTQ from source - note that this requires compiling the CUDA kernel, which requires CUDA toolkit. This may be an issue for Windows users.
+
+```
+git clone https://github.com/PanQiWei/AutoGPTQ
+cd AutoGPTQ
+pip install . # This step requires CUDA toolkit installed
+```
 
 ## How to download and use this model in text-generation-webui