Improve podspec (AFNetworking#4528)

* Remove submodules, requires_arc

* Removed redundant public_header_files

* Fixed bundle identifier for CocoaPods generated framework

* Remove prefix_header_contents attribute

AFNetworking.podspec

@@ -6,43 +6,28 @@ Pod::Spec.new do |s|
   s.homepage = 'https://github.com/AFNetworking/AFNetworking'
   s.social_media_url = 'https://twitter.com/AFNetworking'
   s.authors  = { 'Mattt Thompson' => '[email protected]' }
-  s.source   = { :git => 'https://github.com/AFNetworking/AFNetworking.git', :tag => s.version, :submodules => true }
-  s.requires_arc = true
-
-  s.public_header_files = 'AFNetworking/AFNetworking.h'
-  s.source_files = 'AFNetworking/AFNetworking.h'
-
-  pch_AF = <<-EOS
-#ifndef TARGET_OS_IOS
-  #define TARGET_OS_IOS TARGET_OS_IPHONE
-#endif
+  s.source   = { :git => 'https://github.com/AFNetworking/AFNetworking.git', :tag => s.version }
+
+  s.pod_target_xcconfig = {
+    'PRODUCT_BUNDLE_IDENTIFIER' => 'com.alamofire.AFNetworking'
+  }
 
-#ifndef TARGET_OS_WATCH
-  #define TARGET_OS_WATCH 0
-#endif
+  s.source_files = 'AFNetworking/AFNetworking.h'
 
-#ifndef TARGET_OS_TV
-  #define TARGET_OS_TV 0
-#endif
-EOS
-  s.prefix_header_contents = pch_AF
-
   s.ios.deployment_target = '9.0'
   s.osx.deployment_target = '10.10'
   s.watchos.deployment_target = '2.0'
   s.tvos.deployment_target = '9.0'
-  
+
   s.subspec 'Serialization' do |ss|
     ss.source_files = 'AFNetworking/AFURL{Request,Response}Serialization.{h,m}'
-    ss.public_header_files = 'AFNetworking/AFURL{Request,Response}Serialization.h'
     ss.watchos.frameworks = 'MobileCoreServices', 'CoreGraphics'
     ss.ios.frameworks = 'MobileCoreServices', 'CoreGraphics'
     ss.osx.frameworks = 'CoreServices'
   end
 
   s.subspec 'Security' do |ss|
     ss.source_files = 'AFNetworking/AFSecurityPolicy.{h,m}'
-    ss.public_header_files = 'AFNetworking/AFSecurityPolicy.h'
     ss.frameworks = 'Security'
   end
 
@@ -52,7 +37,6 @@ EOS
     ss.tvos.deployment_target = '9.0'
 
     ss.source_files = 'AFNetworking/AFNetworkReachabilityManager.{h,m}'
-    ss.public_header_files = 'AFNetworking/AFNetworkReachabilityManager.h'
 
     ss.frameworks = 'SystemConfiguration'
   end
@@ -65,15 +49,13 @@ EOS
     ss.dependency 'AFNetworking/Security'
 
     ss.source_files = 'AFNetworking/AF{URL,HTTP}SessionManager.{h,m}', 'AFNetworking/AFCompatibilityMacros.h'
-    ss.public_header_files = 'AFNetworking/AF{URL,HTTP}SessionManager.h', 'AFNetworking/AFCompatibilityMacros.h'
   end
 
   s.subspec 'UIKit' do |ss|
     ss.ios.deployment_target = '9.0'
     ss.tvos.deployment_target = '9.0'
     ss.dependency 'AFNetworking/NSURLSession'
 
-    ss.public_header_files = 'UIKit+AFNetworking/*.h'
     ss.source_files = 'UIKit+AFNetworking'
   end
 end