Installs official node.js .pkg in mac os x platforms.
Doesn't use dmg package because it adds .dmg at the end of downloaded file.
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Install nodejs pkg from official repository in MacOs X
I add you patch in a PR here redguide/nodejs#8
I add mac_pkg but put homebrew by default (via package).
Can you review it?
The development of the nodejs cookbook has been move here: https://github.com/redguide/nodejs
Your PR functionality might have been already included in the new repo. If not, please resubmit it there. Thanks!