Describe the feature or problem you’d like to solve

The GitHub MCP Server documentation currently covers installation guides for various AI tools and IDEs (Claude, Cursor, Windsurf, VS Code with Copilot, etc.) but is missing documentation for Google Gemini CLI. Google Gemini CLI has built-in MCP server support and can integrate with the GitHub MCP Server, but users have no guidance on how to set this up.

Proposed solution

Add comprehensive installation documentation for Google Gemini CLI that follows the established patterns in the existing installation guides. This will benefit GitHub MCP Server by:

• Expanding the ecosystem of supported AI tools
• Providing Google Gemini users with GitHub integration capabilities
• Following consistent documentation standards across all supported platforms
• Enabling more developers to leverage GitHub automation through natural language

Example prompts or workflows (for tools/toolsets only)

Google Gemini CLI users would be able to use natural language commands

Additional context

• Google Gemini CLI supports MCP servers through JSON configuration files
• Authentication requires either Gemini API key or Vertex AI credentials
• Should include the same security best practices (environment variables, PAT scoping) as other guides
• Documentation should follow the exact format established by existing installation guides for consistency