Fix v3.0.0 podspec

Author: Econa77

Magnet.podspec

@@ -7,7 +7,7 @@ Pod::Spec.new do |s|
   s.author       = { "Econa77" => "f.s.1992.ip@gmail.com" }
   s.source       = { :git => "https://github.com/Clipy/Magnet.git", :tag => "v#{s.version}" }
   s.platform     = :osx, '10.10'
-  s.source_files = 'Lib/Magnet/*.swift'
+  s.source_files = 'Lib/Magnet/**/*.swift'
   s.swift_version = '5.0'
   s.frameworks   = 'Carbon', 'Cocoa'
   s.dependency 'Sauce', '~> 2.0.1'