Add Cocoapods support

ios/ReactNativeSearchBar.podspec

@@ -0,0 +1,17 @@
+require "json"
+package = JSON.parse(File.read(File.join(__dir__, "package.json")))
+
+Pod::Spec.new do |s|
+  s.name          = "ReactNativeSearchBar"
+  s.version       = package["version"]
+  s.source_files  = "**/*.{h,m}"
+  s.platform      = :ios, "8.0"
+  s.authors       = { "umhan" => "" }
+  s.license       = package["license"]
+  s.summary       = package["description"]
+  s.homepage      = package["homepage"]
+  s.source        = { :git => package["repository"]["url"] }
+  s.requires_arc  = true
+  s.preserve_paths= "package.json", "LICENSE"
+  s.dependency 'React'
+end