Add the Child Pane to Root.plist in the setting.bundlle

In Xcode 4.3.2,

1. Right click the Project Name in the Project Navigator, and choose "Show in Finder";
2. In Finder, right click the setting.bundle and choose "Show Package Contents";
3. Copy the new .plist to setting.bundle;
4. Back to XCode, open the "setting.bundle", wilfully add one item under the "Preference Items", then expand it and modify the value of "Type" to "Child Pane". Plz refer to the picture.