ci: github action auto deploy github page

.github/workflows/gitbook.yml

@@ -0,0 +1,34 @@
+name: Build and Deploy GitBook 
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '6.14.4'
+
+      - name: Install GitBook CLI
+        run: npm install -g gitbook-cli
+
+      - name: Install GitBook plugins
+        run: gitbook install
+
+      - name: Build GitBook
+        run: gitbook build
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./_book

.gitignore

@@ -20,3 +20,4 @@ docs
 deploy.sh
 .DS_Store
 .idea
+_book

book.json

@@ -0,0 +1,5 @@
+{
+  "plugins": [
+    "intopic-toc"
+  ]
+}