This makes README.md easier to consume and likely less
confusing for people that get it as part of a binary download.
PR-URL: https://github.com/nodejs/node/pull/5634
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
