Merge branch 'new_op' of github.com:ctiller/grpc into new_op

doc/PROTOCOL-HTTP2.md

examples/node/README.md

include/grpc++/support/channel_arguments.h

src/core/client_config/subchannel.c

src/core/support/time_win32.c

src/node/ext/channel.cc

src/node/src/client.js

src/objective-c/examples/Sample/Podfile

src/objective-c/examples/Sample/Sample/ViewController.m

...c/generated_libraries/RouteGuideClient/RouteGuide.podspec

...-c/generated_libraries/RouteGuideClient/route_guide.proto

src/objective-c/tests/Podfile

src/objective-c/tests/RemoteTestClient/RemoteTest.podspec

src/objective-c/tests/RemoteTestClient/empty.proto

src/objective-c/tests/RemoteTestClient/messages.proto

src/objective-c/tests/RemoteTestClient/test.proto

src/php/lib/Grpc/BaseStub.php

src/ruby/ext/grpc/rb_call.c

src/ruby/ext/grpc/rb_channel.c

src/ruby/ext/grpc/rb_channel_args.c