doc: Update README

Author: jcdcdev

.github/README.md

@@ -7,69 +7,11 @@
 
 An opinionated template for creating Umbraco packages hosted on GitHub.
 
-> [!IMPORTANT]
-> Version 15 will only receive security updates and no new features.
+> [!WARNING]
+> Version 15 is no longer supported and is End of Life (EOL).
 
 > Please review the [security policy](https://github.com/jcdcdev/jcdcdev.Umbraco.PackageTemplate?tab=security-ov-file#supported-versions) for more information.
 
-## Quick Start
-
-### Prerequisites
-
-1. A basic understanding of NuGet package development
-    - A NuGet API key - [Create an API key](https://learn.microsoft.com/en-us/nuget/nuget-org/publish-a-package)
-2. A git repository on GitHub
-    - Your repository name must match the project name e.g. `Demo.Package`
-    - [GitHub Action Secret](https://docs.github.com/en/actions/security-guides/using-secrets-in-github-actions) - `NUGET_API_KEY`
-      with your NuGet API key
-
-3. Install template
-
-    ```powershell
-    dotnet new install jcdcdev.Umbraco.PackageTemplate
-    ```
-
-### Create package
-
-1. Create new project
-
-    #### dotnet CLI
-
-    ```powershell
-    dotnet new jcdcdev-umb-package -o Demo.Package --ghUsername jcdcdev --title "My Demo Package" --description "An empty Umbraco package" --addClient    
-    ```
-   
-   #### Visual Studio
-    - Open Visual Studio
-    - Create a new project
-    - Search for `jcdcdev-umb-package`
-    - Click `Next`
-    - Fill in the project title, description, and other details
-    - Click `Create`
-
-2. Open project in your IDE
-3. Build and run project
-4. Congratulations! You have created an empty Umbraco package 🎉
-
-Now you can implement your package features.
-
-1. Update `README.md` with your package details
-2. Update `umbraco-marketplace.json` with your package details
-
-### Publish
-
-1. Push your code to GitHub
-2. Create a pull request into the `main` branch
-3. Merge the pull request
-4. A new release will be created
-
-## Configuration
-
-## Template Parameters
-
-[Documentation](https://github.com/jcdcdev/jcdcdev.Umbraco.PackageTemplate?tab=readme-ov-file#template-parameters)
-
-
 ## Contributing
 
 Contributions to this package are most welcome! Please visit the [Contributing](https://github.com/jcdcdev/jcdcdev.Umbraco.PackageTemplate/contribute) page.