Add auto deployment via GitHub Actions

.github/workflows/deployment.yml

@@ -0,0 +1,35 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: "Checkout"
+      uses: actions/checkout@v2
+
+    - name: "Setup NodeJS"
+        uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+
+    - name: "Install NPM dependencies"
+        run: npm install
+
+    - name: "Install gridsome CLI"
+        run: "npm install --global @gridsome/cli"
+
+    - name: "Build"
+        run: npm run build
+
+    - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          publish_dir: ./dist
+          publish_branch: master
+          external_repository: Ryujinx/ryujinx.github.io 

gridsome.config.js

@@ -1,6 +1,6 @@
 module.exports = {
   siteName: 'Ryujinx',
-  siteUrl: 'https://www.ryujinx.org',
+  siteUrl: 'https://ryujinx.org',
   titleTemplate: 'Ryujinx - %s',
   plugins: []
 }