add podspec

PySwiftyRegex.podspec

@@ -0,0 +1,17 @@
+Pod::Spec.new do |s|
+  s.name         = "PySwiftyRegex"
+  s.version      = "0.1.0"
+  s.license      = "MIT"
+  s.summary      = "Easily deal with Regex in Swift in a Pythonic way"
+  s.homepage     = "https://github.com/cezheng/PySwiftyRegex"
+  s.social_media_url   = "https://twitter.com/AdamoCheng"
+  s.author             = { "Ce Zheng" => "cezheng.cs@gmail.com" }
+  s.source       = { :git => "https://github.com/cezheng/PySwiftyRegex.git", :tag => s.version }
+
+  s.ios.deployment_target = "8.0"
+  s.osx.deployment_target = "10.9"
+
+  s.source_files  = "PySwiftyRegex/*.swift"
+
+  s.requires_arc = true
+end