updated readme

```

### FrozenLake

```

# Additional dependencies:

pip install bs4

pip install svgpathtools

pip install cairosvg

# Then run experiment of SVG simply copy the code below

bash vagen/examples/debug_svg_vision_grpo/run.sh

```

### SVGDino

```

# Additional dependencies:

pip install bs4

pip install svgpathtools

pip install cairosvg

pip install flask

# create server for reward model

python vagen/env/svgdino/reward_model_server.py

# test whether reward model server functions well

python vagen/examples/debug_reward_model_server/reward_server_benchmark.py --concurrency 128 --environments 1000 --interactions 3

# Then run experiment of SVG simply copy the code below

bash vagen/examples/debug_svgdino_vision_grpo/run.sh

```

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