Use github actions for ci instead of circle-ci

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: Test CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x, 13.x]
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: npm install
+        run: npm ci
+        env:
+          CI: true
+      - name: npm test
+        run: npm run test
+      - name: coverage
+        uses: codecov/codecov-action@v1.0.5
+        if: matrix.node-version == '13.x'
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}