Use GitHub Actions for CI (#148)

* Add GitHub Actions for CI

* Continue to use AppVeyor for Windows

* Remove broken TravisCI integration

Author: RyanZim

.github/workflows/ci.yml

@@ -0,0 +1,20 @@
+name: Node.js CI
+on:
+  push:
+    branches: master
+  pull_request:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        node: [10.x, 12.x, 14.x, 16.x]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node }}
+    - run: npm install
+    - run: npm test

.travis.yml

@@ -4,7 +4,7 @@ Node.js - jsonfile
 Easily read/write JSON files in Node.js. _Note: this module cannot be used in the browser._
 
 [![npm Package](https://img.shields.io/npm/v/jsonfile.svg?style=flat-square)](https://www.npmjs.org/package/jsonfile)
-[![build status](https://secure.travis-ci.org/jprichardson/node-jsonfile.svg)](http://travis-ci.org/jprichardson/node-jsonfile)
+[![linux build status](https://img.shields.io/github/workflow/status/jprichardson/node-jsonfile/Node.js%20CI/master)](https://github.com/jprichardson/node-jsonfile/actions?query=branch%3Amaster)
 [![windows Build status](https://img.shields.io/appveyor/ci/jprichardson/node-jsonfile/master.svg?label=windows%20build)](https://ci.appveyor.com/project/jprichardson/node-jsonfile/branch/master)
 
 <a href="https://github.com/feross/standard"><img src="https://cdn.rawgit.com/feross/standard/master/sticker.svg" alt="Standard JavaScript" width="100"></a>

README.md

@@ -4,6 +4,8 @@ environment:
     # node.js
     - nodejs_version: "10"
     - nodejs_version: "12"
+    - nodejs_version: "14"
+    - nodejs_version: "16"
 
 
 # Install scripts. (runs after repo cloning)