Revert "Always go for the Command key binding on the mac. We leave"

This change appears to make arrow keys stop working Mac OSX (10.8).

This reverts commit 0e186efed1fa794972d3203ec4e99f48fc6d7c82.
Merge pull request #443 from blipvert/fixes/11

Revert "Always go for the Command key binding on the mac."