Replace Travis CI with GitHub Actions

Author: wojtekmaj

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+# This workflow will do a clean install of node dependencies and run tests
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: CI
+
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Use Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: '14.x'
+
+      - name: Install dependencies
+        run: yarn --immutable
+
+      - name: Run tests
+        run: yarn test

.travis.yml

@@ -1,4 +1,4 @@
-[![npm](https://img.shields.io/npm/v/@wojtekmaj/async-array-utils.svg)](https://www.npmjs.com/package/@wojtekmaj/async-array-utils) ![downloads](https://img.shields.io/npm/dt/@wojtekmaj/async-array-utils.svg) [![build](https://travis-ci.com/wojtekmaj/async-array-utils.svg?branch=master)](https://travis-ci.com/wojtekmaj/async-array-utils) ![dependencies](https://img.shields.io/david/wojtekmaj/async-array-utils.svg) ![dev dependencies](https://img.shields.io/david/dev/wojtekmaj/async-array-utils.svg) [![tested with jest](https://img.shields.io/badge/tested_with-jest-99424f.svg)](https://github.com/facebook/jest)
+[![npm](https://img.shields.io/npm/v/@wojtekmaj/async-array-utils.svg)](https://www.npmjs.com/package/@wojtekmaj/async-array-utils) ![downloads](https://img.shields.io/npm/dt/@wojtekmaj/async-array-utils.svg) [![CI](https://github.com/wojtekmaj/async-array-utils/workflows/CI/badge.svg)](https://github.com/wojtekmaj/async-array-utils/actions) ![dependencies](https://img.shields.io/david/wojtekmaj/async-array-utils.svg) ![dev dependencies](https://img.shields.io/david/dev/wojtekmaj/async-array-utils.svg) [![tested with jest](https://img.shields.io/badge/tested_with-jest-99424f.svg)](https://github.com/facebook/jest)
 
 # Async-Array-Utils
 A collection of array-related async utilities.