fix composer for symfony > 3.4

Author: Cethy

composer.json

@@ -4,23 +4,23 @@
     "description": "Allow content injection before the app send the response to the client.",
     "type": "symfony-bundle",
     "require": {
-        "php": ">=5.6.17",
-        "symfony/dependency-injection": "^3.3",
-        "symfony/config": "^3.3",
-        "symfony/http-kernel": "^3.3",
+        "php": "^7.1.3",
+        "symfony/dependency-injection": "^3.3|^4.2",
+        "symfony/config": "^3.3|^4.2",
+        "symfony/http-kernel": "^3.3|^4.2",
         "twig/twig": "^1.0||^2.0",
-        "symfony/form": "^3.3",
-        "symfony/http-foundation": "^3.3",
-        "symfony/event-dispatcher": "^3.3"
+        "symfony/form": "^3.3|^4.2",
+        "symfony/http-foundation": "^3.3|^4.2",
+        "symfony/event-dispatcher": "^3.3|^4.2"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8",
-        "symfony/framework-bundle": "^3.3",
-        "symfony/twig-bundle": "^3.3",
-        "symfony/translation": "^3.3",
-        "symfony/validator": "^3.3",
-        "symfony/asset": "^3.3",
-        "symfony/templating": "^3.3"
+        "symfony/framework-bundle": "^3.3|^4.2",
+        "symfony/twig-bundle": "^3.3|^4.2",
+        "symfony/translation": "^3.3|^4.2",
+        "symfony/validator": "^3.3|^4.2",
+        "symfony/asset": "^3.3|^4.2",
+        "symfony/templating": "^3.3|^4.2"
     },
     "authors": [
         {