Fix composer.json

Author: PastisD

composer.json

@@ -17,10 +17,16 @@
                 "email": "contact@geolim4.com",
                 "homepage": "https://github.com/Geolim4",
                 "role": "Developer"
+            },
+            {
+                "name": "PastisD",
+                "email": "PastisD@gmail.com",
+                "homepage": "https://github.com/PastisD",
+                "role": "Developer"
             }
         ],
     "require": {
-        "symfony/symfony": ">2.8 || <3.1",
+        "symfony/symfony": "3.0.*",
         "phpfastcache/phpfastcache": "v5.x-dev"
     },
     "autoload": {