Update composer version to latest

composer.json

@@ -68,11 +68,5 @@
     "extra": {
         "symfony-app-dir": "app",
         "symfony-web-dir": "web"
-    },
-    "repositories": [
-        {
-            "type": "composer",
-            "url": "http://packages.zendframework.com/"
-        }
-    ]
+    }
 }

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "5d9f4c56d966c0eb5fd516042170aae5",
+    "hash": "6b1ea4835f344715b8062542468713a2",
     "packages": [
         {
             "name": "composer/composer",
@@ -12,24 +12,24 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/composer.git",
-                "reference": "a8adbfeb9fc7861deade782938222714168a22a8"
+                "reference": "2b7b6058399907ec5e65911f03eae5e359695e0f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/composer/zipball/a8adbfeb9fc7861deade782938222714168a22a8",
-                "reference": "a8adbfeb9fc7861deade782938222714168a22a8",
+                "url": "https://api.github.com/repos/composer/composer/zipball/2b7b6058399907ec5e65911f03eae5e359695e0f",
+                "reference": "2b7b6058399907ec5e65911f03eae5e359695e0f",
                 "shasum": ""
             },
             "require": {
                 "justinrainbow/json-schema": "~1.1",
                 "php": ">=5.3.2",
-                "seld/jsonlint": "1.*",
+                "seld/jsonlint": "~1.0",
                 "symfony/console": "~2.3",
                 "symfony/finder": "~2.2",
                 "symfony/process": "~2.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "~3.7"
+                "phpunit/phpunit": "~4.0"
             },
             "suggest": {
                 "ext-openssl": "Enabling the openssl extension allows you to access https URLs for repositories and packages",
@@ -72,7 +72,7 @@
                 "dependency",
                 "package"
             ],
-            "time": "2014-09-05 16:28:50"
+            "time": "2014-12-03 13:06:46"
         },
         {
             "name": "doctrine/annotations",
@@ -2757,12 +2757,8 @@
             "time": "2013-03-13 22:11:24"
         }
     ],
-    "packages-dev": [
-
-    ],
-    "aliases": [
-
-    ],
+    "packages-dev": [],
+    "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
         "composer/composer": 20,
@@ -2774,7 +2770,5 @@
     "platform": {
         "php": ">=5.3.3"
     },
-    "platform-dev": [
-
-    ]
+    "platform-dev": []
 }