Use github action instead of travis for CI

PR-URL: #17

Author: tshemsedinov

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: Check labs
+
+on: pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+      - run: npm ci
+      - run: npm t