add spec for TwUI 0.5.0

TwUI/0.5/TwUI.podspec

@@ -0,0 +1,39 @@
+Pod::Spec.new do |s|
+  s.name           = "TwUI"
+  s.version        = "0.5"
+  s.summary        = "A UI framework for Mac based on Core Animation."
+  s.description    = "TwUI is a hardware accelerated UI framework for Mac, inspired by UIKit. It enables:\n"\
+                     "- GPU accelerated rendering backed by CoreAnimation.\n"\
+                     "- Simple model/view/controller development familiar to iOS developers."
+  s.homepage       = "https://github.com/github/twui"
+  s.author         = { "Twitter, Inc." => "opensource@twitter.com" }
+  s.license        = { :type => 'Apache License, Version 2.0' }
+  s.source         = { :git => "https://github.com/github/twui.git", :tag => "0.5.0" }
+
+  s.platform       = :osx, '10.6'
+  s.requires_arc   = true
+
+  s.frameworks     = 'ApplicationServices', 'QuartzCore', 'Cocoa'
+
+  s.subspec 'Support' do |ss|
+    ss.source_files = 'lib/Support'
+  end
+
+  s.subspec 'UIKit' do |ss|
+    ss.source_files = FileList['lib/UIKit/*.{h,m}'].exclude(/TUIAccessibilityElement/)
+    ss.dependency 'TwUI/Support'
+  end
+
+  def s.post_install(target_installer)
+    project = target_installer.project
+    project.objects.each do |obj|
+      if obj.isa.to_s == "PBXBuildFile"
+        fileRef = obj.attributes["fileRef"]
+        file_name = project.objects[fileRef].pathname.basename.to_s
+        if ["NSColor+TUIExtensions.m"].include? (file_name)
+          puts "Removed #{obj.settings.delete('COMPILER_FLAGS')} from #{file_name}"
+        end
+      end
+    end
+  end 
+end