Renamed 'dynamic' binding operator to 'watch'.
Clarified binding syntax when attribute is typeof kff.Model vs. is not specified (observing all model attributes is possible by syntax: data-kff-bind="model.*:click"). If attr is not specified, custom setter must accept only one parameter - value (attr parameter doesn't make sense in this case).
Added kff.DisabledBinder class for 'disabled' binder (sets/unsets disabled state of any form control).