add all .h files to public header

Author: felix-dumit

CTAssetsPickerController.podspec

@@ -18,7 +18,7 @@ Pod::Spec.new do |spec|
   spec.platform              = :ios, '8.0'
   spec.ios.deployment_target = '8.0'
   spec.source                = { :git => 'https://github.com/chiunam/CTAssetsPickerController.git', :tag => 'v3.3.1' }
-  spec.public_header_files   = 'CTAssetsPickerController/*.h'
+  spec.public_header_files   = 'CTAssetsPickerController/**/*.h'
   spec.source_files          = 'CTAssetsPickerController/**/*.{h,m}'
   spec.resource_bundles      = { 'CTAssetsPickerController' => ['CTAssetsPickerController/Resources/CTAssetsPicker.xcassets/*/*.png', 'CTAssetsPickerController/Resources/*.lproj'] }
   spec.ios.frameworks        = 'Photos'