feat: gitHub-mcp-server installation now available in Homebrew

[MayorFaj]

Closes #116

This pull request includes an update to the README.md file, adding detailed installation instructions for Mac users via Homebrew and providing additional guidance on using the CLI after installation.

The formula has been added to the official Homebrew Core repository

Documentation updates:

• README.md: Added a new section for Homebrew installation on Mac, including steps to set up the GitHub token and run the server in stdio mode. Also included a command for accessing help options.This pull request updates the README.md file to include new installation instructions for the GitHub MCP server using Homebrew on Mac. It also provides details on how to set up and use the server after installation.

[Sayvai]

@MayorFaj - Would the README section labelled Usage with VS Code also need to be updated with the correct JSON configuration to interact with the Homebrew binary installation?

[SamMorrowDrums]

Thanks for this. I don't think we want to recommend this as the paved path, but as an alternative. One option is to add sections for: Docker, Homebrew. It matters because the VSCode install buttons will set the docker version, and that will work cross platform, where brew is not available on all platforms (and even though it is available on linux, is rare).

Using this syntax:

<details>
  <summary>Standard installation with Docker</summary>
...
</details>

<details>
  <summary>Install with Homebrew</summary>
...
</details>

[williammartin]

@MayorFaj, sorry for the delay on this.

I've asked a clarifying question about the homebrew formula implementation here: https://github.com/Homebrew/homebrew-core/pull/218501#discussion_r2077819496

[williammartin]

@MayorFaj gentle nudge on ^

[MayorFaj]

Hi, I missed that @williammartin I will have a look.