Update minimal ios and osx version for deployment.
diff --git a/Protobuf.podspec b/Protobuf.podspec
index 6aa8990..0cd5202 100644
--- a/Protobuf.podspec
+++ b/Protobuf.podspec
@@ -18,7 +18,7 @@
                      'objectivec/google/protobuf/*.pbobjc.{h,m}'
   s.header_mappings_dir = 'objectivec'
 
-  s.ios.deployment_target = '6.0'
-  s.osx.deployment_target = '10.8'
+  s.ios.deployment_target = '7.1'
+  s.osx.deployment_target = '10.9'
   s.requires_arc = false
 end