Update podspec

Author: bradhilton

AssociatedValues.podspec

@@ -1,16 +1,17 @@
 Pod::Spec.new do |s|
   s.name         = "AssociatedValues"
-  s.version      = "3.0.0"
+  s.version      = "4.0.0"
   s.summary      = "Associated Objects For Swift Values"
   s.description  = <<-DESC
                     AssociatedValues is a simple Swift wrapper around Objective-C runtime associated objects.
                    DESC
   s.homepage     = "https://github.com/bradhilton/AssociatedValues"
   s.license      = { :type => "MIT", :file => "LICENSE" }
   s.author       = { "Brad Hilton" => "[email protected]" }
-  s.source       = { :git => "https://github.com/bradhilton/AssociatedValues.git", :tag => "3.0.0" }
+  s.source       = { :git => "https://github.com/bradhilton/AssociatedValues.git", :tag => "4.0.0" }
 
   s.ios.deployment_target = "8.0"
+  s.tvos.deployment_target = "9.0"
   s.osx.deployment_target = "10.9"
 
   s.source_files  = "AssociatedValues", "AssociatedValues/**/*.{swift,h,m}"