Initial actions PR

Per @yzguy's issue https://github.com/github/octodns/issues/425

.github/workflows/main.yml

@@ -0,0 +1,24 @@
+name: OctoDNS
+on: [pull_request]
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [2.7, 3.7]
+    steps:
+      - uses: actions/checkout@master
+      - name: Setup python
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+          architecture: x64
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install virtualenv
+      - name: CI Build
+        run: |
+          ./script/cibuild