Simple helper for keyboard shortcuts
AppKeys.registerDown([Arr], function(e) {...}, boolean);
AppKeys.registerUp([Arr], function(e) {...}, boolean);
AppKeys.registerPress([Arr], function(e) {...}, boolean);
[Arr] = Array of keycodes to bind to. Example: [65, 66] // binds to the letter "a" and "b"
funcion(e) {...} = Callback function. Put your executable code in here!
boolean = Whether to use the metakey (control or command)