Moved more ivars to class extensions

iOS/AppDelegate.h

@@ -29,10 +29,6 @@
 
 #import "GCDWebServer.h"
 
-@interface AppDelegate : UIResponder <UIApplicationDelegate> {
-@private
-  UIWindow* _window;
-  GCDWebServer* _webServer;
-}
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
 @property(retain, nonatomic) UIWindow* window;
 @end

iOS/AppDelegate.m

@@ -27,6 +27,13 @@
 
 #import "AppDelegate.h"
 
+@interface AppDelegate () {
+@private
+  UIWindow* _window;
+  GCDWebServer* _webServer;
+}
+@end
+
 @implementation AppDelegate
 
 @synthesize window=_window;