Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/examples/RemoteTestClient/RemoteTest.podspec

+Pod::Spec.new do |s|
+  s.name     = "RemoteTest"
+  s.version  = "0.0.1"
+  s.license  = "New BSD"
+
+  s.ios.deployment_target = '7.1'
+  s.osx.deployment_target = '10.9'
+
+  # Run protoc with the Objective-C and gRPC plugins to generate protocol messages and gRPC clients.
+  s.prepare_command = <<-CMD
+    protoc --objc_out=. --objcgrpc_out=. *.proto
+  CMD
+
+  s.subspec "Messages" do |ms|
+    ms.source_files = "*.pbobjc.{h,m}"
+    ms.header_mappings_dir = "."
+    ms.requires_arc = false
+    ms.dependency "Protobuf", "~> 3.0.0-alpha-4"
+  end
+
+  s.subspec "Services" do |ss|
+    ss.source_files = "*.pbrpc.{h,m}"
+    ss.header_mappings_dir = "."
+    ss.requires_arc = true
+    ss.dependency "gRPC", "~> 0.12"
+    ss.dependency "#{s.name}/Messages"
+  end
+end