Replace Travis with Github Actions

Author: hudochenkov

.editorconfig

@@ -7,6 +7,6 @@ charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
-[{package.json,.travis.yml}]
+[{package.json,*.yml}]
 indent_style = space
 indent_size = 2

.github/workflows/nodejs.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  test:
+    name: Lint and test on Node.js ${{ matrix.node }}
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [10, 12]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+
+      - run: npm ci
+
+      - name: Lint and Test
+        run: npm test

.travis.yml

@@ -1,4 +1,6 @@
-# PostCSS Sorting [![Build Status][ci-img]][ci] [![npm version][npm-version-img]][npm] [![npm downloads last month][npm-downloads-img]][npm]
+# PostCSS Sorting
+
+[![npm version][npm-version-img]][npm] [![npm downloads last month][npm-downloads-img]][npm]
 
 [PostCSS] plugin to keep rules and at-rules content in order.
 
@@ -216,8 +218,6 @@ For more information and options, please consult the [postcss-cli docs](https://
 
 I recommend [Prettier] for formatting style sheets.
 
-[ci-img]: https://travis-ci.org/hudochenkov/postcss-sorting.svg
-[ci]: https://travis-ci.org/hudochenkov/postcss-sorting
 [npm-version-img]: https://img.shields.io/npm/v/postcss-sorting.svg
 [npm-downloads-img]: https://img.shields.io/npm/dm/postcss-sorting.svg
 [npm]: https://www.npmjs.com/package/postcss-sorting