Update composer.json

composer.json

@@ -38,7 +38,13 @@
     "symfony/doctrine-bridge": "<2.7"
   },
   "require-dev": {
-    
+    "doctrine/doctrine-bundle": "^1.3",
+    "friendsofphp/php-cs-fixer": "^2.2",
+    "phpunit/phpunit": "^4.8.35 || ^5.7.11 || ^6.5",
+    "swiftmailer/swiftmailer": "^4.3 || ^5.0 || ^6.0",
+    "symfony/console": "^2.8 || ^3.0 || ^4.0",
+    "symfony/phpunit-bridge": "^2.8 || ^3.0 || ^4.0",
+    "symfony/yaml": "^2.8 || ^3.0 || ^4.0"
   },
   "config": {
     "sort-packages": true