Replace travis with actions

Author: trygve-lie

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: Run Lint and Tests
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        node-version: [10.x, 12.x, 13.x]
+    steps:
+      - uses: actions/checkout@v1
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: npm install
+        run: |
+          npm install
+        env:
+          CI: true
+      - name: Run tests
+        run: |
+          npm run lint && npm test
+        env:
+          CI: true