added support for passing an options object into the plugin declaration
the plugin now test against the key sequence that is referred to by the 'activeCode' key in the settings object.  This allows for it to be overridden by the end user without editing the plugin source
updated to include instructions for using the new features
can now speficy a callback function to execute when the desired keystroke sequence is detected
removing a space
updated README to include instructions for using the new feature