Merge pull request mac-cain13#29 from mac-cain13/extension-api-only

Set APPLICATION_EXTENSION_API_ONLY in target

Author: mac-cain13

R.swift.Library.podspec

@@ -18,6 +18,8 @@ Pod::Spec.new do |spec|
   spec.requires_arc = true
   spec.source          = { :git => "https://github.com/mac-cain13/R.swift.Library.git", :tag => "v#{spec.version}" }
 
+  spec.pod_target_xcconfig = { 'APPLICATION_EXTENSION_API_ONLY' => 'YES' }
+
   spec.ios.deployment_target     = '8.0'
   spec.tvos.deployment_target    = '9.0'