Update documentation with a reference to the Wikipedia article for Connect Four

[nickytonline]

Describe the bug A clear and concise description of what the bug is.

The README currently does not explain what Connect Four is.

Expected behavior A clear and concise description of what you expected to
happen.

Add an excerpt and a reference to the article on Wikipedia in the README.md.

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# connect-four

- A web based version of the classic game Connect Four
+ A web based version of the classic game Connect Four.

+ > *Connect Four* (also known as *Connect 4*, *Four Up*, *Plot Four*, *Find Four*, *Captain’s Mistress*, *Four in a Row*, *Drop Four*, and *Gravitrips* in the Soviet Union) is a two-player  [connection](https://en.wikipedia.org/wiki/Connection_game)   [board game](https://en.wikipedia.org/wiki/Board_game) , in which the players choose a color and then take turns dropping colored tokens into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the lowest available space within the column. The objective of the game is to be the first to form a horizontal, vertical, or diagonal line of four of one’s own tokens.
+ 
+ Reference [Connect Four on Wikipedia](https://en.wikipedia.org/wiki/Connect_Four)

## Recommended IDE Setup

[VS Code](https://code.visualstudio.com/) + [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode).

## Local Development

1. Ensure that you have the
   [latest version of Node 16](https://nodejs.org/en/download/) installed.
1. If you do not have the Netlify CLI installed, follow the
   [Getting Started with Netlify CLI](https://docs.netlify.com/cli/get-started/)
   guide.
1. Run `npm install`
1. Run `ntl dev`.

## Contributing

If you're interested in contributing to the project, please read the
[contributing guidelines](CONTRIBUTING.md).

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

[CodeKage25]

Can I be assigned this issue

[nickytonline]

Done! All yours @CodeKage25.

[CodeKage25]

Thank you, Nick. Will get to it! Been a bit under the weather. I want to ask that my job is to only update the documentation right? And the reference article should be from wikipedia?

[nickytonline]

No rush and yes, it's just a documentation update. I suggested Wikipedia, but if you have another great resource for the game, e.g. maybe the game brand's website, that's all good too.

[CodeKage25]

Thank you Nick! Will get to it, I've been preparing for an interview.