CS fixes (#23)

Author: Nyholm

.gitignore

@@ -1,4 +1,4 @@
 /vendor/
 /composer.lock
 /.php_cs.cache
-/.phpunit.result.cache
+/.phpunit.result.cache

README.md

@@ -2,12 +2,9 @@
 
 [![Latest Version](https://img.shields.io/github/release/happyr/json-api-response-factory.svg?style=flat-square)](https://github.com/happyr/json-api-response-factory/releases)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
-[![Build Status](https://img.shields.io/travis/happyr/json-api-response-factory.svg?style=flat-square)](https://travis-ci.org/happyr/json-api-response-factory)
-[![Code Coverage](https://img.shields.io/scrutinizer/coverage/g/happyr/json-api-response-factory.svg?style=flat-square)](https://scrutinizer-ci.com/g/happyr/json-api-response-factory)
-[![Quality Score](https://img.shields.io/scrutinizer/g/happyr/json-api-response-factory.svg?style=flat-square)](https://scrutinizer-ci.com/g/happyr/json-api-response-factory)
 [![Total Downloads](https://img.shields.io/packagist/dt/happyr/json-api-response-factory.svg?style=flat-square)](https://packagist.org/packages/happyr/json-api-response-factory)
 
-A small wrapper around `league/fractal` to support JsonApi error AND success responses. 
+A small wrapper around `league/fractal` to support JsonApi error AND success responses.
 
 ## Install
 
@@ -48,7 +45,7 @@ final class FooTransformer extends AbstractTransformer
 $item = new Foo('bar');
 $response = $responseFactory->createWithItem($item, new FooTransformer());
 ```
-Response will look like this: 
+Response will look like this:
 ```json
 {
     "data": {
@@ -69,7 +66,7 @@ $items = [
 ];
 $response = $responseFactory->createWithCollection($items, new FooTransformer());
 ```
-Response will look like this: 
+Response will look like this:
 ```json
 {
     "data": [
@@ -104,7 +101,7 @@ final class InvalidRequestResponseModel implements ResponseModelInterface
     {
         return 400;
     }
-    
+
     public function getPayload() : array
     {
         return [
@@ -137,7 +134,7 @@ Example response for message:
 }
 ```
 
-Example response for validation failed: 
+Example response for validation failed:
 ```json
 {
   "errors": [