Update: compose json

composer.json

@@ -9,6 +9,11 @@
             "email": "jinhui.zhu@live.cn"
         }
     ],
+    "autoload": {
+       "psr-4": {
+         "Qii\\": "src"
+       }
+    },
     "minimum-stability": "dev",
     "require": {
         "php": ">=5.3.0",