Add CI, basic unit tests and PSR-12 (#3)

* Add CI and enforce PSR-12 code style
* Add basic unit tests

Author: wivern-co-uk

.gitignore

@@ -3,4 +3,4 @@ composer.phar
 
 # Commit your application's lock file https://getcomposer.org/doc/01-basic-usage.md#commit-your-composer-lock-file-to-version-control
 # You may choose to ignore a library lock file http://getcomposer.org/doc/02-libraries.md#lock-file
-# composer.lock
+composer.lock

.phpcs.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<ruleset name="Webflow PHP SDK">
+  <arg name="extensions" value="php"/>
+  <file>.</file>
+  <exclude-pattern>*/vendor/*</exclude-pattern>
+  <rule ref="PSR12">
+  </rule>
+</ruleset>

.travis.yml

@@ -0,0 +1,25 @@
+sudo: false
+language: php
+dist: trusty
+
+cache:
+  directories:
+    - $HOME/.composer/cache/files
+
+matrix:
+  include:
+    - php: 7.0
+    - php: 7.1
+    - php: 7.2
+    - php: 7.3
+    - php: nightly
+
+  allow_failures:
+    - php: nightly
+
+install:
+  - composer install
+
+script:
+  - ./vendor/bin/phpcs -v
+  - ./vendor/bin/phpunit --bootstrap vendor/autoload.php tests/

README.md

@@ -1,4 +1,7 @@
 # PHP SDK for the Webflow CMS API
+
+[![Build Status](https://travis-ci.com/wivern-co-uk/webflow-php-sdk.svg?branch=master)](https://travis-ci.com/wivern-co-uk/webflow-php-sdk)
+
 Implementation based on [Webflow CMS API Reference](https://developers.webflow.com/#cms-api-reference)
 
 ## Features implemented
@@ -73,4 +76,3 @@ $webflow->removeItem($collectionId, $itemId);
 composer require expertlead/webflow-php-sdk
 ```
 No extra dependencies! You are welcome ;)
-

composer.json

@@ -5,6 +5,10 @@
   "require": {
     "ext-curl": "*"
   },
+  "require-dev": {
+    "squizlabs/php_codesniffer": "^3.4",
+    "phpunit/phpunit": "^5"
+  },
   "license": "MIT",
   "authors": [
     {