Update and rename blank.yml to build.yml

Author: jimexist

.github/workflows/build.yml

@@ -0,0 +1,23 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+    name: Test on node ${{ matrix.node_version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        node_version: [10, 12]
+        os: [ubuntu-latest]
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node_version }}
+      uses: actions/setup-node@v1
+      with:
+        version: ${{ matrix.node_version }}
+    - name: npm install, build and test
+      run: |
+        npm ci
+        npm run build --if-present
+        npm test