Replace Travis CI with GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,19 @@
+name: ci
+on:
+  push:
+    branches: ['*']
+  pull_request:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: ['10.13.0', '12', '14', '16']
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node }}
+      - run: npm ci
+      - run: npm run build
+      - run: npm test

README.md

@@ -1,10 +1,10 @@
 # node-qrcode
 > QR code/2d barcode generator.
 
-[![Travis](https://img.shields.io/travis/soldair/node-qrcode.svg?style=flat-square)](http://travis-ci.org/soldair/node-qrcode)
-[![npm](https://img.shields.io/npm/v/qrcode.svg?style=flat-square)](https://www.npmjs.com/package/qrcode)
-[![npm](https://img.shields.io/npm/dt/qrcode.svg?style=flat-square)](https://www.npmjs.com/package/qrcode)
-[![npm](https://img.shields.io/npm/l/qrcode.svg?style=flat-square)](https://github.com/soldair/node-qrcode/blob/master/license)
+[![ci](https://github.com/soldair/node-qrcode/workflows/ci/badge.svg)](https://github.com/soldair/node-qrcode/actions)
+[![npm](https://img.shields.io/npm/v/qrcode.svg)](https://www.npmjs.com/package/qrcode)
+[![npm](https://img.shields.io/npm/dt/qrcode.svg)](https://www.npmjs.com/package/qrcode)
+[![npm](https://img.shields.io/npm/l/qrcode.svg)](https://github.com/soldair/node-qrcode/blob/master/license)
 
 - [Highlights](#highlights)
 - [Installation](#installation)