Bump version to 0.0.4

Author: liamnichols

swift-user-defaults.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name = "swift-user-defaults"
   s.module_name = "SwiftUserDefaults"
-  s.version = "0.0.3"
+  s.version = "0.0.4"
   s.summary = "A series of Swift friendly utilities for Foundation's UserDefaults class"
   s.homepage = "https://github.com/cookpad/swift-user-defaults"
   s.license = { :type => "MIT", :file => "LICENSE.txt" }