docs: update README with custom domain setup instructions and fix markdown linting

Author: Your Name

README.md

@@ -15,6 +15,42 @@ A beautiful, feature-rich markdown note-taking application with live preview, bu
 - **Local Storage** - Notes are automatically saved in your browser
 - **Syntax Highlighting** - Code blocks with syntax highlighting
 
+## 🌐 Custom Domain Setup
+
+To use your custom domain `thesolutiondesk.ca/tools/free/markdown`:
+
+### 1. DNS Configuration
+
+Add these records in your domain's DNS settings:
+
+```dns
+# CNAME Record
+Name: tools.thesolutiondesk.ca
+Type: CNAME
+Value: thesolutiondeskandcompany.github.io
+TTL: Auto
+
+# TXT Record (for GitHub verification)
+Name: _github-pages-challenge-thesolutiondesk
+Type: TXT
+Value: "<GitHub will provide this>"
+TTL: Auto
+```
+
+### 2. GitHub Pages Settings
+
+1. Go to your repository → Settings → Pages
+2. Under "Custom domain", enter: `thesolutiondesk.ca/tools/free/markdown`
+3. Check "Enforce HTTPS" when available
+
+### 3. Verification
+
+After DNS propagation (up to 48 hours), your app will be available at:
+
+```
+https://thesolutiondesk.ca/tools/free/markdown
+```
+
 ## 🚀 Getting Started
 
 ### Prerequisites
@@ -72,17 +108,32 @@ A beautiful, feature-rich markdown note-taking application with live preview, bu
 - `Ctrl+D` - Toggle dark/light mode
 - `F11` - Toggle fullscreen mode
 
-## 📦 Building for Production
+## 🚀 Deployment
 
-To create a production build:
+### Local Development
+
+```bash
+npm install
+npm run dev
+```
+
+### Building for Production
 
 ```bash
 npm run build
-# or
-yarn build
 ```
 
-This will create a `dist` directory with the production-ready files.
+### Deploying to GitHub Pages
+
+```bash
+# Build and deploy
+npm run deploy
+```
+
+This will automatically:
+1. Build the production version
+2. Push to the `gh-pages` branch
+3. Make it available at your GitHub Pages URL
 
 ## 🤝 Contributing