docs: Update README to enhance clarity and add environment setup instructions

README.md

@@ -1,9 +1,18 @@
 # ComfyUI-Dashscope
 
-This project adapts the dashscope([aliyun-bailian](https://bailian.console.aliyun.com)) api into ComfyUI.
+This project integrates the Dashscope API from [Aliyun Bailian](https://bailian.console.aliyun.com) into ComfyUI.
+
+![vlm example](assets/vlm.png)
+Refer to this example workflow for a quick start.
 
 ## Requirements
 
+### Environment Setup
+
+Set the system environment variable `DASHSCOPE_API_KEY` on your computer. Refer to [this guide](https://help.aliyun.com/zh/model-studio/developer-reference/configure-api-key-through-environment-variables?spm=a2c4g.11186623.help-menu-2400256.d_3_1.3f8a1078V8zfae&scm=20140722.H_2803795._.OR_help-T_cn~zh-V_1#e4cd73d544i3r) for instructions on configuring the Dashscope API key based on your system. You can view your API key [here](https://bailian.console.aliyun.com/?apiKey=1#/api-key).
+
+### Installation
+
 Install the necessary Python dependencies with:
 
 ```sh
@@ -12,8 +21,11 @@ pip install -r requirements.txt
 
 ## Models
 
-You can find LLM models or other AI models in [models](./models.md).
+You can find LLM models or other AI models in [models documentation](./models.md).
 
-### Contribution
+## Contribution
 
-Thank you for considering contributions! Fork the repository, make changes, and send a pull request for review and merging.
+We welcome contributions! Please fork the repository, make your changes, and submit a pull request for review.
+
+## License
+This project is licensed under the MIT License. See the LICENSE file for details.