Fixed some typos and updated dependencies

Author: Jochem

.gitignore

@@ -2,3 +2,4 @@ composer.lock
 phpunit.xml
 vendor
 coverage
+.idea

.travis.yml

@@ -6,6 +6,7 @@ php:
   - 5.6
   - 7.0
   - 7.1
+  - 7.2
 
 before_script:
   - travis_retry composer self-update

README.md

@@ -7,7 +7,7 @@ This is package is based on [vlucas/phpdotenv](https://github.com/vlucas/phpdote
 
 [![Build Status](https://travis-ci.org/Maatwebsite/yamlenv.svg?branch=master)](https://travis-ci.org/Maatwebsite/yamlenv.svg?branch=master)
 
-Why choose Yaml over env.yml?
+Why choose Yaml over .env?
 ---------
 The benefits of using a env.yml file or similar has been proven a long time ago. 
 The popularity of [vlucas/phpdotenv](https://github.com/vlucas/phpdotenv) and 

composer.json

@@ -15,7 +15,7 @@
         "symfony/yaml": "~2.0|~3.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.0"
+        "phpunit/phpunit": ">=4.0"
     },
     "autoload": {
         "psr-4": {

src/Loader.php

@@ -156,8 +156,7 @@ public function setEnvironmentVariable($name, $value = null, $initialization = f
 
             // During initialization we want to keep all existing environment variables
             // e.g. Anything set on an apache or server level
-            if($initialization)
-            {
+            if($initialization) {
                 return;
             }