updated composer for example apps

issue #439

composer.lock

@@ -11,12 +11,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/yiisoft/yii2-framework.git",
-                "reference": "15a8d0559260e39954a8eb6de0d28bfb7de95e7b"
+                "reference": "2d93f20ba6044ac3f1957300c4ae85fd98ecf47d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/yiisoft/yii2-framework/zipball/15a8d0559260e39954a8eb6de0d28bfb7de95e7b",
-                "reference": "15a8d0559260e39954a8eb6de0d28bfb7de95e7b",
+                "url": "https://api.github.com/repos/yiisoft/yii2-framework/zipball/2d93f20ba6044ac3f1957300c4ae85fd98ecf47d",
+                "reference": "2d93f20ba6044ac3f1957300c4ae85fd98ecf47d",
                 "shasum": ""
             },
             "require": {
@@ -97,7 +97,7 @@
                 "framework",
                 "yii"
             ],
-            "time": "2013-05-25 20:59:05"
+            "time": "2013-05-29 02:55:14"
         },
         {
             "name": "yiisoft/yii2-composer",