fix NewsstandKit

Author: leungkimming2

Batman2.iOS/Batman2.iOS.csproj

@@ -57,6 +57,7 @@
     <MtouchLink>None</MtouchLink>
     <MtouchInterpreter>-all</MtouchInterpreter>
     <CodesignProvision>iOS Team Provisioning Profile: com.kmleung.Batman3</CodesignProvision>
+    <MtouchExtraArgs>--weak-framework=NewsstandKit.framework/NewsstandKit</MtouchExtraArgs>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
     <DebugType>none</DebugType>