Merge branch 'master' of github.com:grpc/grpc into grpclb_api

.gitignore

BUILD

Makefile

Rakefile

binding.gyp

build.yaml

doc/statuscodes.md

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

gRPC.podspec

grpc.def

grpc.gemspec

include/grpc++/impl/codegen/async_unary_call.h

include/grpc++/impl/codegen/call.h