Merge pull request #862 from microsoft/gh-act

Adds GH Actions for CI

Author: Orta

.github/workflows/ci.yml

@@ -0,0 +1,14 @@
+name: CI
+on: pull_request
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+
+      - run: npm install
+      - run: npm run build
+      - run: npm test