Update README.md

[PichuChen]

增加新手友善的 MCP 設定教學

[Copilot]

Pull Request Overview

This PR adds a beginner-friendly example for configuring an MCP client in the README.

• Adds a concrete gemini-cli configuration example and file location.
• Guides users to paste the JSON snippet into the project’s .gemini/settings.json.

Comments suppressed due to low confidence (1)

README.md:35

• [nitpick] Consider clarifying that users may need to create the .gemini directory if it doesn't already exist, and you might replace “舉例來說” with “例如” for a more concise style.

    舉例來說，如果是 [gemini-cli](https://github.com/google-gemini/gemini-cli) 的話，你可以把它複製貼上到目前專案資料夾的 `.gemini/settings.json` 檔案內。