add testing action

.github/workflows/actions.yml

@@ -0,0 +1,25 @@
+on: ["push"]
+
+name: Test Coveralls
+
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: actions/checkout@v1
+
+      - name: Use Node.js 16.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+
+      - name: npm install, npm run test
+        run: |
+          npm install
+          npm run test
+
+      - name: Coveralls GitHub Action
+        uses: coverallsapp/[email protected]