Setup CircleCI for testing

.circleci/config.yml

@@ -0,0 +1,57 @@
+version: 2.0
+
+jobs: 
+  "PHP 7.3": 
+    docker: 
+      - 
+        auth: 
+          password: $DOCKERHUB_PASSWORD
+          username: mydockerhub-user
+        image: "cimg/php:7.3"
+    steps: 
+      - checkout
+      - run: "sudo composer install -n --prefer-dist"
+      - run: "sudo composer self-update"
+      - run: "sudo composer update --no-progress --prefer-dist --profile"
+      - run: 
+          command: "composer test"
+          name: Test PHP7.3
+
+  "PHP 7.4": 
+    docker: 
+      - 
+        auth: 
+          password: $DOCKERHUB_PASSWORD
+          username: mydockerhub-user
+        image: "cimg/php:7.4"
+    steps: 
+      - checkout
+      - run: "sudo composer install -n --prefer-dist"
+      - run: "sudo composer self-update"
+      - run: "sudo composer update --no-progress --prefer-dist --profile"
+      - run: 
+          command: "composer test"
+          name: Test PHP7.4
+
+  "PHP 8.0": 
+    docker: 
+      - auth: 
+          password: $DOCKERHUB_PASSWORD
+          username: mydockerhub-user
+        image: "cimg/php:8.0"
+    steps: 
+      - checkout
+      - run: "sudo composer install -n --prefer-dist"
+      - run: "sudo composer self-update"
+      - run: "sudo composer update --no-progress --prefer-dist --profile"
+      - run: 
+          command: "composer test"
+          name: Test PHP8.0
+
+workflows:
+  version: 2
+  build:
+      jobs:
+        - "PHP 7.3"
+        - "PHP 7.4"
+        - "PHP 8.0"

.travis.yml

@@ -1,16 +0,0 @@
-language: php
-
-php:
-  - 7
-  - 7.1
-  - 7.2
-  - 7.3
-  - 7.4
-  
-sudo: false
-
-install:
-  - travis_retry composer update --no-progress --prefer-dist --profile
-
-script:
-  - composer test

README.md

@@ -1,6 +1,6 @@
 # MediaWiki Pivot Skin
 
-[![Build Status](https://travis-ci.org/Hutchy68/pivot.svg?branch=master)](https://travis-ci.org/Hutchy68/pivot)
+[![CircleCI](https://circleci.com/gh/Hutchy68/pivot.svg?style=shield)](https://circleci.com/gh/Hutchy68/pivot)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/Hutchy68/pivot/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/Hutchy68/pivot/?branch=master)
 
 A [MediaWiki](http://www.mediawiki.org) skin that focuses on mobile first but will pivot to all viewports with elegance. Supports responsive layouts and has classes predefined for [Semantic MediaWiki](http://semantic-mediawiki.org/wiki/Semantic_MediaWiki). Built on the [Zurb Foundation 5](http://foundation.zurb.com) CSS framework.

composer.json

@@ -1,6 +1,6 @@
 {
 	"require-dev": {
-		"jakub-onderka/php-parallel-lint": "0.9"
+		"php-parallel-lint/php-parallel-lint": "1.2.0"
 	},
 	"scripts": {
 		"test": [