add github workflow

Author: devinryanriota

.github/workflows/build-on-master-push.yml

@@ -0,0 +1,21 @@
+name: Build project on push to master
+
+on: 
+  push:
+    branches:
+      -master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: use Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+      - name: install dependencies
+        run: yarn
+      - name: build project
+        run: yarn build