tj/n — pull request #201 by gcochard (2014-10-20 16:28:44+00:00)
Title: Adding signed binaries for mac os. (fixes #199)

Mac os's firewall can be a pain when unsigned binaries want to
listen to ports (privileged or not) and will not remember firewall
permissions for the unsigned binary. This commit addresses the issue
by downloading the `.pkg` file (which has signed binaries) from nodejs.org
and unpacking it.