Merge branch 'master' into poll_override2

.yardopts

BUILD

Makefile

binding.gyp

build.yaml

examples/node/README.md

examples/node/greeter_client.js

examples/node/greeter_server.js

examples/node/package.json

examples/node/route_guide/route_guide.proto

examples/node/route_guide/route_guide_client.js

examples/node/route_guide/route_guide_server.js

gRPC.podspec

grpc.gemspec

package.json

src/core/census/log.c

src/core/census/log.h

src/core/iomgr/udp_server.c

src/core/surface/alarm.c

src/cpp/server/server_builder.cc