Merge branch 'master' into stress_test_misc

.gitignore

BUILD

Makefile

build.yaml

examples/node/greeter_client.js

examples/node/greeter_server.js

examples/node/helloworld_grpc_pb.js

examples/node/helloworld_pb.js

examples/node/package.json

grpc.gemspec

package.json

package.xml

requirements.txt

src/compiler/config.h

src/compiler/cpp_generator.cc

src/compiler/cpp_generator.h

src/compiler/cpp_plugin.cc

src/compiler/csharp_generator.cc

src/compiler/generator_helpers.h

src/compiler/node_generator.cc