Update model support in readme (#370)

README.md

@@ -378,7 +378,12 @@ python -m sglang.launch_server --model-path meta-llama/Llama-2-7b-chat-hf --port
   - `python3 -m sglang.launch_server --model-path liuhaotian/llava-v1.6-34b --tokenizer-path liuhaotian/llava-v1.6-34b-tokenizer --port 3000`
 - Yi-VL
   - see [srt_example_yi_vl.py](examples/quick_start/srt_example_yi_vl.py).
-- AWQ/GPTQ quantization
+- StableLM
+- Command-R
+- DBRX
+- AWQ/GPTQ/Marlin quantization
+
+Instructions for supporting a new model are [here](https://github.com/sgl-project/sglang/blob/main/docs/model_support.md).
 
 ## Benchmark And Performance