Merge branch 'master' into corelimit2

.gitignore

BUILD

Makefile

PYTHON-MANIFEST.in

README.md

binding.gyp

build.yaml

doc/interop-test-descriptions.md

examples/cpp/helloworld/Makefile

examples/cpp/helloworld/greeter_async_server.cc

examples/csharp/helloworld/.nuget/packages.config

examples/csharp/helloworld/Greeter/Greeter.csproj

examples/csharp/helloworld/Greeter/packages.config

...ples/csharp/helloworld/GreeterClient/GreeterClient.csproj

examples/csharp/helloworld/GreeterClient/Program.cs

examples/csharp/helloworld/GreeterClient/packages.config

...ples/csharp/helloworld/GreeterServer/GreeterServer.csproj

examples/csharp/helloworld/GreeterServer/packages.config

examples/csharp/helloworld/generate_protos.bat

examples/csharp/route_guide/.nuget/packages.config