Add documentation workflow

.github/workflows/Documentation.yml

@@ -0,0 +1,34 @@
+name: Documentation
+
+on:
+    push:
+        branches:
+            - 'master'
+            - 'develop'
+            - 'release/.*'
+        tags: '*'
+    pull_request:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        julia-version: [1.3.0]
+        julia-arch: [x86]
+        os: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v1.0.0
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: ${{ matrix.julia-version }}
+      - name: Install dependencies
+        run: |
+          julia ci_prep.jl;
+          julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
+      - name: Build and deploy
+        env:
+          # https://github.com/JuliaDocs/Documenter.jl/issues/1177
+          # GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # For authentication with GitHub Actions token
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }} # For authentication with SSH deploy key
+        run: julia --project=docs/ --color=yes docs/make.jl