Update README.md

add windows server commad

Author: th-neu

README.md

@@ -64,12 +64,20 @@ This allows you to use llama.cpp compatible models with any OpenAI compatible cl
 
 To install the server package and get started:
 
+Linux
 ```bash
 pip install llama-cpp-python[server]
 export MODEL=./models/7B/ggml-model.bin
 python3 -m llama_cpp.server
 ```
 
+Windows
+```cmd
+pip install llama-cpp-python[server]
+SET MODEL=\models\7B\ggml-model.bin
+python3 -m llama_cpp.server
+```
+
 Navigate to [http://localhost:8000/docs](http://localhost:8000/docs) to see the OpenAPI documentation.
 
 ## Docker image