ISSUE-109: Updated versions to 4.0 in documentation and composer.json

Author: raymondschouten

README.md

@@ -4,15 +4,15 @@
 [![Total Downloads](https://poser.pugx.org/darkwebdesign/symfony-addon-transformers/downloads?format=flat)](https://packagist.org/packages/darkwebdesign/symfony-addon-transformers)
 [![License](https://poser.pugx.org/darkwebdesign/symfony-addon-transformers/license?format=flat)](https://packagist.org/packages/darkwebdesign/symfony-addon-transformers)
 
-[![Build Status](https://travis-ci.org/darkwebdesign/symfony-addon-transformers.svg?branch=3.4)](https://travis-ci.org/darkwebdesign/symfony-addon-transformers?branch=3.4)
-[![Coverage Status](https://codecov.io/gh/darkwebdesign/symfony-addon-transformers/branch/3.4/graph/badge.svg)](https://codecov.io/gh/darkwebdesign/symfony-addon-transformers)
+[![Build Status](https://travis-ci.org/darkwebdesign/symfony-addon-transformers.svg?branch=4.0)](https://travis-ci.org/darkwebdesign/symfony-addon-transformers?branch=4.0)
+[![Coverage Status](https://codecov.io/gh/darkwebdesign/symfony-addon-transformers/branch/4.0/graph/badge.svg)](https://codecov.io/gh/darkwebdesign/symfony-addon-transformers)
 [![PHP Version](https://img.shields.io/badge/php-5.5%2B-777BB3.svg)](https://php.net/)
-[![Symfony Version](https://img.shields.io/badge/symfony-3.4-93C74B.svg)](https://symfony.com/)
+[![Symfony Version](https://img.shields.io/badge/symfony-4.0-93C74B.svg)](https://symfony.com/)
 
 Symfony Add-on Transformers is a collection of extra Symfony data transformers that you can use in your Symfony
 applications.
 
-Learn more about it in its [documentation](https://github.com/darkwebdesign/symfony-addon-pack/blob/3.4/doc/reference/transformers/index.md).
+Learn more about it in its [documentation](https://github.com/darkwebdesign/symfony-addon-pack/blob/4.0/doc/reference/transformers/index.md).
 
 ## Features
 

composer.json

@@ -11,8 +11,8 @@
     "require": {
         "doctrine/common": "^2.4",
         "doctrine/orm": "^2.4",
-        "php": ">=5.5.9",
-        "symfony/form": "3.4.*"
+        "php": ">=7.1.3",
+        "symfony/form": "4.0.*"
     },
     "require-dev": {
         "codeclimate/php-test-reporter": "^0.3.2",