Migrate composer.json to psr4

composer.json

@@ -29,8 +29,8 @@
         "sensio/generator-bundle": "~2.2",
         "twig/twig": "~1.12",
         "twig/extensions": "~1.0",
-        "sonata-project/jquery-bundle": "1.8.*",
-        "sonata-project/exporter": "1.*",
+        "sonata-project/jquery-bundle": "~1.8",
+        "sonata-project/exporter": "~1.0",
         "sonata-project/block-bundle": "~2.2,>=2.2.7",
         "sonata-project/core-bundle": "~2.2@dev",
         "doctrine/common": "~2.2",
@@ -38,18 +38,17 @@
         "knplabs/knp-menu": ">=1.1.0,<3.0.0"
     },
     "require-dev": {
-        "jms/translation-bundle": "*@dev",
+        "jms/translation-bundle": "~1.1",
         "symfony/yaml": "~2.2",
         "sonata-project/intl-bundle": "~2.1"
     },
     "suggest": {
-        "sonata-project/doctrine-orm-admin-bundle": "2.2.*@dev",
-        "sonata-project/intl-bundle": "2.1.*"
+        "jms/translation-bundle": "Extract message keys from Admins",
+        "sonata-project/intl-bundle": "Add localized date and number into the list"
     },
     "autoload": {
-        "psr-0": { "Sonata\\AdminBundle": "" }
+        "psr-4": { "Sonata\\AdminBundle\\": "" }
     },
-    "target-dir": "Sonata/AdminBundle",
     "extra": {
         "branch-alias": {
             "dev-master": "2.2.x-dev"