Bump version to 2.0.2

Author: LinXunFeng

LXFProtocolTool.podspec

@@ -18,8 +18,8 @@ LXFProtocolTool是使用Swift中的协议来实现多种方便、实用的工具
   s.author           = { 'LinXunFeng' => '[email protected]' }
   s.source           = { :git => 'https://github.com/LinXunFeng/LXFProtocolTool.git', :tag => s.version.to_s }
 
-  s.ios.deployment_target = '8.0'
-  s.swift_version = "2.0.2"
+  s.ios.deployment_target = '9.0'
+  s.swift_version = "5.0"
 
   s.source_files = 'LXFProtocolTool/Classes/**/*.swift'