Add CI (#47)

Run build and test on PR

Author: thomaspoignant

.github/workflows/ci.yml

@@ -0,0 +1,14 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup Node.js environment
+        uses: actions/[email protected]
+      - run: sudo npm install -g typescript nyc mocha
+      - run: npm install
+      - run: npm run build
+      - run: npm run test
+