Added podspec file

Appirater.podspec

@@ -0,0 +1,13 @@
+Pod::Spec.new do |s|
+  s.name          = 'Appirater'
+  s.version       = '0.0.5'
+  s.platform      = :ios
+  s.summary       = "A utility that reminds your iPhone app's users to review the app."
+  s.homepage      = 'http://arashpayan.com/blog/2009/09/07/presenting-appirater/'
+  s.author        = { 'Arash Payan' => 'arash.payan@gmail.com' }
+  s.source        = { :git => 'https://github.com/arashpayan/appirater.git', :commit => '0613894ed1ac0b2e9183e5b6ee26024674aaccd4' }
+  s.source_files  = '*.{h,m}'
+  s.resources     = '*.lproj'
+  s.frameworks    = 'CFNetwork', 'SystemConfiguration', 'StoreKit'
+  s.license       = { :type => 'MIT', :text => 'Copyright 2012. Arash Payan. This library is distributed under the terms of the MIT/X11.' }
+end