Add podspec to support :local installation

NoticeView.podspec

@@ -0,0 +1,14 @@
+Pod::Spec.new do |s|
+  s.name         = 'NoticeView'
+  s.version      = '2.4'
+  s.license      = 'MIT'
+  s.summary      = 'A TweetBot-like notice component for iOS.'
+  s.homepage     = 'https://github.com/tciuro/NoticeView/'
+  s.author       = { 'Tito Ciuro' => 'tciuro@mac.com' }
+  s.source       = { :git => 'https://github.com/tciuro/NoticeView.git', :tag => '2.4' }
+  s.platform     = :ios
+  s.source_files = 'NoticeView/WBNoticeView/*.{m,h}'
+  s.frameworks   = 'Foundation', 'UIKit', 'CoreGraphics', 'QuartzCore'
+  s.resources    = 'NoticeView/WBNoticeView/NoticeView.bundle'
+  s.requires_arc = true
+end