add podspec

DOFavoriteButton.podspec

@@ -0,0 +1,15 @@
+Pod::Spec.new do |s|
+  s.name         = "DOFavoriteButton"
+  s.version      = "0.0.1"
+  s.summary      = "Cute Animated Button written in Swift. It could be just right for favorite buttons!"
+  s.homepage     = "https://github.com/okmr-d/DOFavoriteButton"
+  s.screenshots  = "https://raw.githubusercontent.com/okmr-d/okmr-d.github.io/master/img/DOFavoriteButton/demo.gif"
+  s.license      = { :type => "MIT", :file => "LICENSE" }
+  s.author       = { "Daiki Okumura" => "daiki.okumura@gmail.com" }
+  s.platform     = :ios, "8.0"
+  s.source       = { :git => "https://github.com/okmr-d/DOFavoriteButton.git", :tag => s.version.to_s }
+  s.source_files = "DOFavoriteButton/*.swift"
+  s.resources    = "DOFavoriteButton/*.png"
+  s.framework    = "UIKit"
+  s.requires_arc = true
+end