creationix/nvm — pull request #481 by johnloy (2014-07-24 19:30:44+00:00)
Title: Changes $path var to $node_path

Avoids obliteration of $path [set earlier by Prezto/zsh](https://github.com/sorin-ionescu/prezto/blob/master/runcoms/zprofile#L45). Stomping on $path causes dirname to not be in the PATH resulting in an error.