GitHub actions (#246)

Use github actions for PRs

Author: Zach Moody

.github/workflows/pr.yml

@@ -0,0 +1,31 @@
+name: PR Test
+
+on: [pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python: [2.7, 3.6]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: Install pynetbox and testing packages.
+        run: pip install . pycodestyle mock
+
+      - name: Run Linter
+        run: |
+          pycodestyle pynetbox
+          pycodestyle --ignore=E501 tests
+          
+      - name: Run Tests
+        run: python -m unittest discover
+