Merge branch 'master' into fc_unary

.gitignore

.gitmodules

BUILD

CMakeLists.txt

Makefile

PYTHON-MANIFEST.in

README.md

build.yaml

doc/PROTOCOL-HTTP2.md

doc/health-checking.md

examples/cpp/README.md

examples/cpp/cpptutorial.md

examples/cpp/helloworld/Makefile

examples/cpp/route_guide/Makefile

examples/csharp/helloworld-from-cli/Greeter/Helloworld.cs

...ples/csharp/helloworld-from-cli/Greeter/HelloworldGrpc.cs

examples/csharp/helloworld-from-cli/Greeter/project.json

examples/csharp/helloworld-from-cli/GreeterClient/Program.cs

...les/csharp/helloworld-from-cli/GreeterClient/project.json

examples/csharp/helloworld-from-cli/GreeterServer/Program.cs