[Feat] Add app icon

- Fix example picker style

Example/RadioColorPicker/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -1,53 +1,14 @@
 {
   "images" : [
     {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
+      "filename" : "RadioColorPickerIcon.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
     }
   ],
   "info" : {
-    "version" : 1,
-    "author" : "xcode"
+    "author" : "xcode",
+    "version" : 1
   }
 }

Example/RadioColorPicker/ViewController.swift

@@ -67,9 +67,7 @@ class ViewController: UIViewController {
     radioColorPicker.addColor(.systemGreen)
     radioColorPicker.addColor(.systemBlue)
     radioColorPicker.addColor(.systemPurple)
-    radioColorPicker.backgroundColor = .black
-
-//    radioColorPicker.contentInset = .init(top: 20, leading: 24, bottom: 20, trailing: 24)
+    radioColorPicker.contentInset = .init(top: 20, leading: 24, bottom: 20, trailing: 24)
     radioColorPicker.delegate = self
   }