Pass functions to HotKeys binding method

[abologna-r7]

I slightly modified the method in order to accept functions instead of just function names.

var bind = function(events, context, namespace) {
      _.each(events, function(method, trigger) {
         var parts = trigger.split(/\s*\+\s*/),
             key = _.last(parts),
             modifiers = _.initial(parts),
             callback = null;

         if (_.isFunction(context[method])) {
            callback = _.bind(context[method], context);


         } else if (_.isFunction(method)) {
            callback = _.bind(method, context);
         }

         if (eventsNamespace[namespace]) {
            eventsNamespace[namespace].push(buildHandler(key, modifiers, callback));
         } else {
            eventsNamespace[namespace] = [buildHandler(key, modifiers, callback)];
         }
      });

      return context;
   };

[jamesplease]

Make a PR?