Configure GitHub Pages deployment

.github/workflows/deploy.yml

@@ -0,0 +1,50 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: ['main']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: 'pages'
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm i
+
+      - name: Build
+        run: |
+          npm run build -- --base=/${{ github.event.repository.name }}/
+        
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: 'dist'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

README.md

@@ -4,6 +4,10 @@ A modern web application built with React and Vite that allows users to merge mu
 
 ![Excel Merger Screenshot](./screenshot.png)
 
+## Live Demo
+
+[https://hppanpaliya.github.io/excel-merger/](https://hppanpaliya.github.io/excel-merger/)
+
 ## Features
 
 - 🔄 Drag and drop interface for file selection