Allow global installs along side symfony 3 deps

composer.json

@@ -16,8 +16,8 @@
     },
     "require": {
         "guzzlehttp/guzzle": "~4.0|~5.0|~6.0",
-        "symfony/console": "~2.3",
-        "symfony/process": "~2.3"
+        "symfony/console": "~2.3|~3.0",
+        "symfony/process": "~2.3|~3.0"
     },
     "bin": [
         "laravel"