ci: added Github Actions

.github/workflows/build.yml

@@ -0,0 +1,42 @@
+name: Node CI
+
+on: [push]
+
+jobs:
+  build:
+    env:
+      CI: true
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        node-version: [10.x]
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Use Node.js ${{ matrix.node-version }} on {{ matrix.os }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install Dependencies
+        run: yarn
+      - name: Lint
+        run: yarn lint
+      - name: Test
+        run: yarn test
+      - name: Build
+        run: yarn build:rollup
+