github actions and gitignore

.github/workflows/deploy-docs.yml

@@ -0,0 +1,23 @@
+name: Build and Deploy
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v2.3.1
+
+      - name: Install and Build 🔧
+        run: |
+          cd docs
+          npm install
+          ./node_modules/.bin/vuepress build
+
+      - name: Deploy 🚀
+        uses: JamesIves/github-pages-deploy-action@4.0.0
+        with:
+          branch: gh-pages
+          folder: docs/.vuepress/dist

.gitignore

@@ -5,4 +5,5 @@
 /build/
 node_modules/
 /.php_cs.cache
-.phpunit.result.cache
+.phpunit.result.cache
+/docs/.vuepress/dist