podspec の swift_version 指定方法変更

Author: temoki

.swift-version

@@ -8,10 +8,11 @@ Pod::Spec.new do |s|
   s.author           = 'temoki'
   s.source           = { :git => 'https://github.com/temoki/TortoiseGraphics.git', :tag => s.version.to_s }
   s.social_media_url = 'https://twitter.com/temoki'
+  s.swift_version    = '5.0'
+  s.source_files     = 'Sources/*'
+  s.frameworks       = 'CoreGraphics'
+  s.ios.framework    = 'UIKit'
+  s.osx.framework    = 'AppKit'
   s.ios.deployment_target = '10.0'
-  s.osx.deployment_target  = '10.10'
-  s.source_files = 'Sources/*'
-  s.frameworks = 'CoreGraphics'
-  s.ios.framework = 'UIKit'
-  s.osx.framework = 'AppKit'
+  s.osx.deployment_target = '10.10'
 end