Add initial script for GH Actions

Author: nicoddemus

Diff for: .github/workflows/main.yml

@@ -0,0 +1,68 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["2.7", "3.5", "3.6", "3.7", "3.8", "pypy3"]
+        os: [ubuntu-latest, windows-latest]
+        include:
+          - python: "2.7"
+            tox_env: "py27-pytest31"
+          - python: "3.5"
+            tox_env: "py35-pytest31"
+          - python: "3.6"
+            tox_env: "py36-pytest31"
+          - python: "3.7"
+            tox_env: "py37-pytest31"
+          - python: "3.8"
+            tox_env: "py38-pytest31"
+          - python: "pypy3"
+            tox_env: "pypy3-pytest31"
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python }}
+    - name: Install tox
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox
+    - name: Test
+      run: |
+        tox -e ${{ matrix.tox_env }}  
+
+  deploy:
+
+    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
+
+    runs-on: ubuntu-latest
+
+    needs: build
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: "3.7"
+    - name: Install wheel
+      run: |
+        python -m pip install --upgrade pip
+        pip install wheel
+    - name: Build package
+      run: |
+        python setup.py sdist bdist_wheel
+    - name: Publish package to PyPI
+      uses: pypa/gh-action-pypi-publish@master
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_token }}