Minor podspec improvements (react-native-audio-toolkit#206)

Author: sbeca

ReactNativeAudioToolkit.podspec

@@ -1,19 +1,18 @@
 require "json"
 
-Pod::Spec.new do |s|
-  # NPM package specification
-  package = JSON.parse(File.read(File.join(File.dirname(__FILE__), "package.json")))
+# NPM package specification
+package = JSON.parse(File.read(File.join(File.dirname(__FILE__), "package.json")))
 
+Pod::Spec.new do |s|
   s.name         = "ReactNativeAudioToolkit"
   s.version      = package["version"]
   s.summary      = package["description"]
   s.homepage     = package["homepage"]
   s.license      = "MIT"
   s.author       = { "Rasmus Eskola" => "fruitiex@gmail.com" }
   s.platforms    = { :ios => "9.0", :tvos => "9.0" }
-  s.source       = { :git => package["repository"]["url"], :tag => "#{s.version}" }
+  s.source       = { :git => package["repository"]["url"], :tag => "v#{s.version}" }
   s.source_files = "ios/**/*.{h,m}"
 
   s.dependency "React"
-
 end