Merge remote-tracking branch 'refs/remotes/grpc/master'

.travis.yml

Makefile

build.yaml

doc/PROTOCOL-HTTP2.md

examples/README.md

examples/objective-c/auth_sample/AuthTestService.podspec

examples/objective-c/auth_sample/MakeRPCViewController.m

examples/objective-c/auth_sample/Podfile

examples/objective-c/auth_sample/README.md

examples/objective-c/helloworld/README.md

examples/objective-c/route_guide/Podfile

examples/objective-c/route_guide/README.md

examples/objective-c/route_guide/RouteGuide.podspec

...-c/route_guide/RouteGuideClient.xcodeproj/project.pbxproj

examples/objective-c/route_guide/ViewControllers.m

gRPC.podspec

include/grpc++/support/byte_buffer.h

include/grpc++/support/string_ref.h

include/grpc++/support/sync_stream.h

include/grpc/byte_buffer.h