deploy docs to github

.github/workflows/deploy.docs.yml

@@ -0,0 +1,18 @@
+name: "deploy:docs to github"
+on: [push]
+# TODO: master
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+
+    - name: vuepress-deploy
+      uses: jenkey2011/vuepress-deploy@master
+      env:
+        ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+        #TARGET_REPO: username/repo
+        #TARGET_BRANCH: master
+        BUILD_SCRIPT: npm install && npm docs:build
+        BUILD_DIR: build/docs/