Merge branch 'master' into node_route_guide_sample

INSTALL

Makefile

README.md

build.json

include/grpc++/async_unary_call.h

include/grpc++/completion_queue.h

include/grpc++/impl/call.h

include/grpc++/server_context.h

include/grpc++/stream.h

src/compiler/cpp_generator.cc

src/compiler/python_generator.cc

src/compiler/python_generator.h

src/compiler/python_plugin.cc

src/core/README.md

src/core/channel/client_setup.c

src/core/channel/client_setup.h

src/core/iomgr/fd_posix.c

src/core/security/credentials.c

src/core/security/json_token.c

src/core/support/cpu_posix.c