Add comprehensive README with installation instructions

Author: sivakov512

README.md

@@ -1 +1,61 @@
-# kicad-templates
+# KiCad Template Collection
+
+A collection of KiCad PCB templates optimized for different PCB manufacturing services. Currently includes templates for JLCPCB.
+
+Templates come with design rules and stackups already configured to meet manufacturer specifications for optimal price-to-quality ratio.
+
+## Installation
+
+There are two ways to install and use these templates:
+
+### Method 1: Using Plugin and Content Manager (Recommended)
+
+The easiest way to install these templates is through KiCad's Plugin and Content Manager:
+
+1. Open KiCad
+2. Go to **Plugin and Content Manager** → **Manage**
+3. Click **Add Repository**
+4. Add this repository URL:
+   ```
+   https://raw.githubusercontent.com/sivakov512/kicad-pcm-index/master/repository.json
+   ```
+5. Click **OK**
+6. Find "Sivakov KiCad template collection" in the list and click **Install**
+7. Restart KiCad to ensure all templates are properly loaded
+
+To create a project using these templates after installation:
+
+1. Go to **File** → **New Project from Template**
+2. Navigate to the plugin directory:
+   - On macOS: `~/Documents/KiCad/9.0/3rdparty/templates/com_github_sivakov512_kicad-templates`
+   - For other operating systems, check your KiCad third-party path in **Preferences** → **Configure Paths** → **KICAD9_3RD_PARTY**
+3. Select the desired template from the available options
+
+This method ensures that your templates will automatically update when new versions are released with fixes and new templates.
+
+### Method 2: Cloning the Repository
+
+Alternatively, you can clone this repository and use the templates directly without using the Plugin Manager:
+
+1. Clone this repository to your local machine
+2. Go to **File** → **New Project from Template**
+3. Navigate to the `kicad-templates` directory within the cloned repository
+4. Select the desired template from the available options
+
+This method makes it easier to understand the template path, but requires manual updates to get new templates and fixes.
+
+## Available Templates
+
+| Template | Description | Manufacturer |
+|----------|-------------|--------------|
+| **JLCPCB Low-Cost Template** | PCB template with minimum design rules for cost-effective fabrication at JLCPCB | JLCPCB |
+
+![Template Selection](./docs/template_selector.png)
+
+## Contribution
+
+Contributions are welcome! If you have templates for other manufacturers or different configurations, please submit a pull request.
+
+## License
+
+This project is licensed under the terms of the [MIT License](./LICENSE).