Minor fix to plist.info for iOS project

Updated branding to all platforms for Platformer sample to MonoGame standard.

Just awaiting updated MonoGame 3.2 NuGet to finish testing and publish

Platformer2D/Platforms/iOS/Info.plist

@@ -9,7 +9,7 @@
 		<string>monogameicon.png</string>
 	</array>
 	<key>MinimumOSVersion</key>
-	<string></string>
+	<string>7.0</string>
 	<key>UIDeviceFamily</key>
 	<array>
 		<integer>1</integer>
@@ -30,5 +30,7 @@
 	<string></string>
 	<key>NSMainNibFile~ipad</key>
 	<string></string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
 </dict>
 </plist>

Platformer2D/Platforms/iOS/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="MonoGame.Binaries" version="3.1.4-alpha" targetFramework="MonoTouch10" />
+</packages>