doc: merging behavior of writeHead vs setHeader
Original contribution of @aredridel with some minor fixes discussed at https://github.com/nodejs/node/pull/3895.
cc @nodejs/documentation
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Original contribution of @aredridel with some minor fixes discussed at https://github.com/nodejs/node/pull/3895.
cc @nodejs/documentation