Update PaymentKit and Podspec

Stripe.podspec

@@ -1,16 +1,17 @@
 Pod::Spec.new do |s|
-  s.name                 = "Stripe"
-  s.version              = "1.0.2"
-  s.summary              = "Stripe is a web-based API for accepting payments online."
-  s.license              = { :type => 'MIT', :file => 'LICENSE' }
-  s.homepage             = "https://stripe.com"
-  s.author               = { "Saikat Chakrabarti" => "[email protected]" }
-  s.source               = { :git => "https://github.com/stripe/stripe-ios.git", :tag => "v1.0.2"}
-  s.source_files         = 'Stripe/**/*.{h,m}'
-  s.public_header_files  = 'Stripe/**/*.h'
-  s.platform             = :ios
-  s.frameworks           = 'Foundation', 'QuartzCore'
-  s.requires_arc         = true
-
-  s.dependency 'PaymentKit' , '~> 1.0.2'
+  s.name                  = "Stripe"
+  s.version               = "1.0.3"
+  s.summary               = "Stripe is a web-based API for accepting payments online."
+  s.license               = { :type => 'MIT', :file => 'LICENSE' }
+  s.homepage              = "https://stripe.com"
+  s.author                = { "Saikat Chakrabarti" => "[email protected]" }
+  s.source                = { :git => "https://github.com/stripe/stripe-ios.git", :tag => "v1.0.3"}
+  s.source_files          = 'Stripe/**/*.{h,m}'
+  s.public_header_files   = 'Stripe/**/*.h'
+  s.platform              = :ios
+  s.frameworks            = 'Foundation', 'QuartzCore'
+  s.requires_arc          = true
+  s.ios.deployment_target = '5.0'
+
+  s.dependency              'PaymentKit' , '~> 1.0.3'
 end