Merge github.com:grpc/grpc into bad_metadata

.gitmodules

BUILD

Makefile

PYTHON-MANIFEST.in

README.md

Rakefile

binding.gyp

build.yaml

examples/cpp/helloworld/Makefile

examples/cpp/route_guide/Makefile

examples/node/greeter_client.js

examples/node/greeter_server.js

examples/node/package.json

examples/node/route_guide/route_guide_client.js

examples/node/route_guide/route_guide_server.js

examples/objective-c/helloworld/main.m

examples/protos/helloworld.proto

examples/protos/route_guide.proto

examples/ruby/greeter_client.rb

examples/ruby/route_guide/route_guide_client.rb