Add README and update devcontainer with additional GitHub extensions

Author: chrisreddington

.devcontainer/devcontainer.json

@@ -10,7 +10,14 @@
 	"customizations": {
 		"vscode": {
 			"extensions": [
-				"github.vscode-github-actions"
+				"GitHub.codespaces",
+				"github.vscode-github-actions",
+				"GitHub.copilot",
+				"GitHub.copilot-chat",
+				"github.copilot-workspace",
+				"GitHub.vscode-pull-request-github",
+				"GitHub.remotehub",
+				"golang.Go"
 			]
 		}
 	}

README.md

@@ -0,0 +1,57 @@
+# gh-game
+
+A GitHub CLI extension that allows you to play games through the GitHub CLI.
+
+## Installation
+
+```sh
+gh extension install chrisreddington/gh-game
+```
+
+## Commands
+
+### Coin Toss
+
+Play a coin toss game where you try to guess whether the coin will land on heads or tails. Keep your streak going by guessing correctly!
+
+```sh
+gh game cointoss heads  # or tails
+```
+
+The game will continue as long as you keep guessing correctly, allowing you to build up a streak. You can quit at any time by selecting "Quit" when prompted for your next guess.
+
+### Whoami
+
+Display information about the currently authenticated GitHub user.
+
+```sh
+gh game whoami
+```
+
+## Development
+
+### Prerequisites
+
+- Go 1.23 or newer
+- GitHub CLI installed
+
+### Building from source
+
+1. Clone the repository
+2. Run `go build` to build the extension
+3. Run `go test ./...` to run the tests
+
+### Development Container
+
+This project includes a [development container configuration](.devcontainer/devcontainer.json) for VS Code, which provides a consistent development environment with:
+- Go 1.23
+- GitHub CLI
+- Several VS Code extensions for GitHub
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+## License
+
+This project is available as open source under the terms of the [MIT License](LICENSE).