feat: update podspec

Author: BrandonStalnaker

react-native-mparticle.podspec

@@ -11,7 +11,8 @@ Pod::Spec.new do |s|
 
   s.homepage     = package['homepage']
   s.license      = package['license']
-  s.platform     = :ios, "9.0"
+  s.platform     = { :ios => "9.0", :tvos => "9.0" }
+
 
   s.source       = { :git => "https://github.com/mParticle/react-native-mparticle.git", :tag => "#{s.version}" }
   s.source_files  = "ios/**/*.{h,m}"