diff --git a/SDAutoLayoutDemo.xcodeproj/project.xcworkspace/xcuserdata/LEE.xcuserdatad/UserInterfaceState.xcuserstate b/SDAutoLayoutDemo.xcodeproj/project.xcworkspace/xcuserdata/LEE.xcuserdatad/UserInterfaceState.xcuserstate
index 99c7df7..eaace97 100644
Binary files a/SDAutoLayoutDemo.xcodeproj/project.xcworkspace/xcuserdata/LEE.xcuserdatad/UserInterfaceState.xcuserstate and b/SDAutoLayoutDemo.xcodeproj/project.xcworkspace/xcuserdata/LEE.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/Contents.json b/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/Contents.json
index eeea76c..39c66e3 100644
--- a/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/Contents.json
+++ b/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/Contents.json
@@ -1,68 +1,104 @@
 {
   "images" : [
     {
+      "size" : "20x20",
       "idiom" : "iphone",
-      "size" : "29x29",
+      "filename" : "icon-20@2x.png",
       "scale" : "2x"
     },
     {
+      "size" : "20x20",
       "idiom" : "iphone",
-      "size" : "29x29",
+      "filename" : "icon-20@3x.png",
       "scale" : "3x"
     },
     {
+      "size" : "29x29",
       "idiom" : "iphone",
-      "size" : "40x40",
+      "filename" : "icon-29@2x.png",
       "scale" : "2x"
     },
     {
+      "size" : "29x29",
       "idiom" : "iphone",
-      "size" : "40x40",
+      "filename" : "icon-29@3x.png",
       "scale" : "3x"
     },
     {
+      "size" : "40x40",
       "idiom" : "iphone",
-      "size" : "60x60",
+      "filename" : "icon-40@2x.png",
       "scale" : "2x"
     },
     {
+      "size" : "40x40",
       "idiom" : "iphone",
+      "filename" : "icon-40@3x.png",
+      "scale" : "3x"
+    },
+    {
       "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon-60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon-60@3x.png",
       "scale" : "3x"
     },
     {
       "idiom" : "ipad",
-      "size" : "29x29",
+      "size" : "20x20",
       "scale" : "1x"
     },
     {
+      "size" : "20x20",
       "idiom" : "ipad",
-      "size" : "29x29",
+      "filename" : "icon-20@2x-1.png",
       "scale" : "2x"
     },
     {
+      "size" : "29x29",
       "idiom" : "ipad",
-      "size" : "40x40",
+      "filename" : "icon-29.png",
       "scale" : "1x"
     },
     {
+      "size" : "29x29",
       "idiom" : "ipad",
-      "size" : "40x40",
+      "filename" : "icon-29@2x-1.png",
       "scale" : "2x"
     },
     {
+      "size" : "40x40",
       "idiom" : "ipad",
-      "size" : "76x76",
+      "filename" : "icon-40.png",
       "scale" : "1x"
     },
     {
+      "size" : "40x40",
       "idiom" : "ipad",
-      "size" : "76x76",
+      "filename" : "icon-40@2x-1.png",
       "scale" : "2x"
     },
     {
+      "size" : "76x76",
       "idiom" : "ipad",
+      "filename" : "icon-76.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "icon-76@2x.png",
+      "scale" : "2x"
+    },
+    {
       "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "icon-83.5@2x.png",
       "scale" : "2x"
     }
   ],
diff --git a/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/icon-20@2x-1.png b/SDAutoLayoutDemo/Images.xcassets/AppIcon.appiconset/icon-20@2x-1.png
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