Fix

Author: EyreFree

WRNavigationBar_swift.podspec

@@ -10,10 +10,11 @@ WRNavigationBar which allows you to change NavigationBar's appearance dynamicall
   s.homepage         = 'https://github.com/wangrui460/WRNavigationBar_swift'
   # s.screenshots     = 'www.example.com/screenshots_1', 'www.example.com/screenshots_2'
   s.license          = { :type => 'MIT', :file => 'LICENSE' }
-  s.author           = { 'EyreFree' => 'eyrefree@eyrefree.org' }
+  s.author           = { 'wangrui460' => 'wangruidev@gmail.com' }
   s.source           = { :git => 'https://github.com/wangrui460/WRNavigationBar_swift.git', :tag => s.version.to_s }
   # s.social_media_url = 'https://twitter.com/<TWITTER_USERNAME>'
 
+  s.swift_version = "4.2"
   s.ios.deployment_target = '8.0'
 
   s.source_files = 'WRNavigationBar_swift/Classes/**/*'