build(app): adapt iOS splashscreen

app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -1,17 +1,17 @@
 {
   "images" : [
     {
-      "filename" : "Icon-App-60x60@3x.png",
+      "filename" : "iTunesArtwork@1x.png",
       "idiom" : "universal",
       "scale" : "1x"
     },
     {
-      "filename" : "Icon-App-76x76@2x 1.png",
+      "filename" : "iTunesArtwork@2x.png",
       "idiom" : "universal",
       "scale" : "2x"
     },
     {
-      "filename" : "Icon-App-1024x1024@1x 1.png",
+      "filename" : "iTunesArtwork@3x.png",
       "idiom" : "universal",
       "scale" : "3x"
     }

app/ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -1,8 +1,10 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="23504" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="23506"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--View Controller-->
@@ -14,9 +16,11 @@
                         <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
                             <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                                <rect key="frame" x="-49" y="192" width="512" height="512"/>
                             </imageView>
                         </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
@@ -28,10 +32,10 @@
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="53" y="375"/>
+            <point key="canvasLocation" x="80.916030534351137" y="264.08450704225356"/>
         </scene>
     </scenes>
     <resources>
-        <image name="LaunchImage" width="168" height="185"/>
+        <image name="LaunchImage" width="512" height="512"/>
     </resources>
 </document>