Use node-growl instead of notify-send directly.

This allows us to support both Linux and Windows (via Growl for
Windows).  On Linux, we still use notify-send, albeit via node-growl.
Merge pull request #13 from ZoogieZork/growl

Use node-growl instead of notify-send directly.
adding 0.0.9 changes to date
bumping version to 0.0.9, upgrading dustjs-linkedin, specifying exact version for growl
redoing how optimist is defined, adding -v, changing how requirments are checked