Update podspec

Bump version number to 1.2.1

FSOAuth.podspec

@@ -1,11 +1,11 @@
 Pod::Spec.new do |s|
   s.name         = "FSOAuth"
-  s.version      = "1.2"
+  s.version      = "1.2.1"
   s.summary      = "Foursquare native auth makes it easier for users of your app to connect to Foursquare."
   s.homepage     = "http://developer.foursquare.com/"
   s.license      = 'Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)'
   s.author       = { "Brian Dorfman" => "[email protected]" }
-  s.source       = { :git => "https://github.com/foursquare/foursquare-ios-oauth.git",:tag => 'v1.2' }
+  s.source       = { :git => "https://github.com/foursquare/foursquare-ios-oauth.git",:tag => 'v1.2.1' }
   s.platform     = :ios
   s.source_files = 'FSOAuth.{h,m}'
   s.requires_arc = true