Add github Actions

Author: WezomDev

.github/workflows/test.yml

@@ -0,0 +1,19 @@
+name: Test and Build
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [8.x]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Install
+        run: npm ci
+      - name: Test
+        run: npm test

package.json

@@ -4,8 +4,8 @@
   "description": "The custom `sort` method (mobile-first / desktop-first) of CSS media queries for `postcss-sort-media-queries`, `css-mqpacker` or `pleeease` (which uses css-mqpacker) or, perhaps, something else ))",
   "main": "index.js",
   "files": [
-  	"index.js",
-  	"index.d.ts"
+    "index.js",
+    "index.d.ts"
   ],
   "scripts": {
     "test": "npm run standard && npm run jest",