Update versions in Podspec to 0.11.1

gRPC.podspec

@@ -36,14 +36,15 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  s.version  = '0.11.0'
+  version = '0.11.1'
+  s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'http://www.grpc.io'
   s.license  = 'New BSD'
   s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
-  # s.source = { :git => 'https://github.com/grpc/grpc.git',
-  #              :tag => 'release-0_11_0-objectivec-0.11.0' }
+  s.source = { :git => 'https://github.com/grpc/grpc.git',
+               :tag => "release-#{version.gsub(/\./, '_')}-objectivec-#{version}" }
 
   s.ios.deployment_target = '7.1'
   s.osx.deployment_target = '10.9'