another TotalCommander clone for OS X written in macruby

feature list
	- basic navigation                                          done
	- open files with default editor                            done
	- open file in viewer                                       done
	- open file in editor                                       done
	- delete                                                    basic
    - mkdir                                                     basic
	- copy
	- move
	- rename (inline)
	- search
	- quick view
	- filter
	- cancel job
	- view queue job status/progress
	- os popup menu integration
	- favourites paths
	- path history
	- open in twin                                              done
	- switch views
	- save settings
	- externalize keyboard shortcuts in properties file
	- command line (with auto-completion)
	- multi-rename
	- compare files