Fix for run on ios simulator

@@ -15,7 +15,10 @@ A new flutter plugin project.
   s.source_files = 'Classes/**/*'
   s.source_files = 'Classes/**/*'
   s.public_header_files = 'Classes/**/*.h'
   s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'
   s.dependency 'Flutter'
+  s.platform = :ios, '8.0'
 
 
+  # Flutter.framework does not contain a i386 slice. Only x86_64 simulators are supported.
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
   s.ios.deployment_target = '8.0'
   s.ios.deployment_target = '8.0'
 end
 end