Prep for migration to GitHub Actions CI/CD

.github/workflows/test.yml

@@ -0,0 +1,44 @@
+name: Run tests
+on: [push, pull_request]
+
+jobs:
+  run:
+    name: Node ${{ matrix.node }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node: [8, 10, 12]
+
+    steps:
+    - uses: actions/checkout@master
+      with:
+        fetch-depth: 3
+
+    - name: Set Node.js version
+      uses: actions/setup-node@v1.1.0
+      with:
+        version: ${{ matrix.node }}
+
+    - run: node --version
+    - run: npm --version
+    - run: java -version
+
+    - name: Install npm dependencies
+      run: npm ci
+
+    - name: Run tests
+      run: npm test
+
+    - name: Run BrowserStack tests
+      run: npm run js-test-cloud
+      if: matrix.node == 10 && github.repository == 'twbs/bootstrap' && github.event_name == 'push'
+      env:
+        BROWSER_STACK_ACCESS_KEY: "${{ secrets.BROWSER_STACK_ACCESS_KEY }}"
+        BROWSER_STACK_USERNAME: "${{ secrets.BROWSER_STACK_USERNAME }}"
+
+    - name: Run Coveralls
+      run: npm run coveralls
+      if: matrix.node == 10
+      env:
+        COVERALLS_REPO_TOKEN: "${{ secrets.COVERALLS_REPO_TOKEN }}"