Add usage instructions (#2)

- Add usage instructions (50c663babd485d9366c8d04c88baefa3441b4895)

README.md

@@ -15,6 +15,20 @@ Llama 2 is a collection of pretrained and fine-tuned generative text models rang
 
 Weights have been converted to `float16` from the original `bfloat16` type, because `numpy` is not compatible with `bfloat16` out of the box.
 
+```bash
+# Install mlx, mlx-examples, huggingface-cli
+pip install mlx
+pip install huggingface_hub hf_transfer
+git clone https://github.com/ml-explore/mlx-examples.git
+
+# Download model
+export HF_HUB_ENABLE_HF_TRANSFER=1
+huggingface-cli download --local-dir Llama-2-7b-mlx mlx-llama/Llama-2-7b-mlx
+
+# Run example
+python mlx-examples/llama/llama.py Llama-2-7b-mlx/llama-2-7b.npz Llama-2-7b-mlx/tokenizer.model "My name is "
+```
+
 Please, refer to the [original model card](https://huggingface.co/meta-llama/Llama-2-7b/tree/main) for details on Llama 2.