setup CI

.github/workflows/deploy-docs.yml

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+name: Deploy docs
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Switch Xcode version
+      run: sudo xcode-select -s /Applications/Xcode_11.4.1.app/Contents/Developer
+    - name: Generate microsite
+      run: |
+        brew install nef
+        brew install sourcekitten
+        gem install bundler -v 2.0.2
+        gem install cocoapods -v 1.9.1
+        bundle install --gemfile docs/Gemfile --path vendor/bundle
+        nef jekyll --project Documentation.app --output docs --main-page Documentation.app/Jekyll/Home.md
+        BUNDLE_GEMFILE=./docs/Gemfile bundle exec jekyll build -s docs -d gen-docs
+    - name: Deploy microsite
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        personal_token: ${{ secrets.DEPLOY_TOKEN }}
+        publish_branch: gh-pages
+        publish_dir: ./gen-docs
+        disable_nojekyll: true

.github/workflows/nef-compile.yml

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+name: nef verify documentation
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Switch Xcode version
+      run: sudo xcode-select -s /Applications/Xcode_11.4.1.app/Contents/Developer
+    - name: Compile documentation
+      run: |
+        brew install nef
+        gem install cocoapods -v 1.9.1
+        nef compile --project Documentation.app