Merge pull request #27 from symfony/nicolas-grekas-patch-1

Replace ocramius/package-versions, it breaks Composer 1+2 support

Author: nicolas-grekas

composer.json

@@ -4,6 +4,7 @@
     "license": "MIT",
     "description": "A pack for the Doctrine ORM",
     "require": {
+        "composer/package-versions-deprecated: "*",
         "doctrine/orm": "*",
         "doctrine/doctrine-bundle": "*",
         "doctrine/doctrine-migrations-bundle": "*"