THRIFT-3773: Swift 3 changes, Squashed (#1084)

Client: swift
diff --git a/Thrift-swift3.podspec b/Thrift-swift3.podspec
new file mode 100644
index 0000000..e13d171
--- /dev/null
+++ b/Thrift-swift3.podspec
@@ -0,0 +1,16 @@
+Pod::Spec.new do |s|
+  s.name         = "Thrift-swift3"
+  s.version      = "1.1.0"
+  s.summary       = "Apache Thrift is a lightweight, language-independent software stack with an associated code generation mechanism for RPC."
+  s.description   = <<-DESC
+The Apache Thrift software framework, for scalable cross-language services development, combines a software stack with a code generation engine to build services that work efficiently and seamlessly between C++, Java, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, OCaml and Delphi and other languages.
+                    DESC
+  s.homepage      = "http://thrift.apache.org"
+  s.license       = { :type => 'Apache License, Version 2.0', :url => 'https://raw.github.com/apache/thrift/thrift-0.9.0/LICENSE' }
+  s.author        = { "The Apache Software Foundation" => "apache@apache.org" }
+  s.ios.deployment_target = '9.0'
+  s.osx.deployment_target = '10.10'
+  s.requires_arc  = true
+  s.source        = { :git => "https://github.com/apache/thrift.git", :tag => "thrift-1.0.0" }
+  s.source_files  = "lib/swift/Sources/*.swift"
+end