Add GH workflow for building docs

Author: TJBIII

.github/workflows/docs.yml

@@ -0,0 +1,32 @@
+name: Docs
+on:
+  push:
+    branches:
+      - master
+jobs:
+  docs:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.1
+
+      - name: Setup Python
+        uses: actions/setup-python@master
+        with:
+          python-version: 3.7
+
+      - name: Install pipenv
+        uses: dschep/install-pipenv-action@v1
+
+      - name: Build docs
+        run: |
+          cd docs
+          pipenv install
+          pipenv run make html
+          cd ..
+
+      - name: Deploy
+        uses: JamesIves/github-pages-deploy-action@4.1.4
+        with:
+          branch: gh-pages
+          folder: docs/_build/html