build: move CI to GitHub actions

.gitattributes

@@ -1 +1 @@
-* text=auto
+* text=auto eol=lf

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: Node CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  test:
+    name: Test on node ${{ matrix.node_version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        node-version: [10.x, 12.x]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - name: Install dependencies
+      run: yarn
+
+    - name: Test
+      run: yarn test
+      env:
+        CI: true