docs: create a README.md file for the project (#4)

README.md

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+# Create Nounish App
+
+A Node.js package to generate a new Nounish app using a simple command.
+
+## Installation
+
+Install the package globally using pnpm:
+
+```bash
+pnpm install -g create-nounish-app
+```
+
+## Usage
+
+To create a new Nounish app, run the following command:
+
+```bash
+create-nounish-app --name my-nounish-app
+```
+
+This will create a new directory `my-nounish-app` with a basic template for a Nounish app.
+
+### Arguments
+
+- `--name <app-name>` (required): The name of the app to create.
+
+## Development
+
+For development, clone the repository and install the dependencies:
+
+```bash
+git clone https://github.com/your-username/create-nounish-app.git
+cd create-nounish-app
+pnpm install
+```
+
+To build the project, run:
+
+```bash
+pnpm run build
+```
+
+## License
+
+This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENSE) file for details.