Attributes didn't use observe's value

[eddie168]

Thanks so much for the great plugin, it is really useful. There is a bug that I found for attributes in bindings. Sorry I didn't do a pull requests but here is the patch:

*** backbone.stickit.js Tue Sep 18 15:39:16 2012
--- backbone.stickit.new.js Tue Sep 18 15:39:27 2012
***************
*** 64,70 ****
                                  _.each(attributes, function(attrConfig) {
                                          var lastClass = '',
                                                  updateAttr = function() {
!                                                         var val = applyViewFn(self, attrConfig.format) || model.get(modelAttr);
                                                          // If it is a class then we need to remove the last value and add the new.
                                                          if (attrConfig.name == 'class') {
                                                                  $el.removeClass(lastClass).addClass(val);
--- 64,70 ----
                                  _.each(attributes, function(attrConfig) {
                                          var lastClass = '',
                                                  updateAttr = function() {
!                                                         var val = applyViewFn(self, attrConfig.format, model.get(attrConfig.observe)) || model.get(modelAttr);
                                                          // If it is a class then we need to remove the last value and add the new.
                                                          if (attrConfig.name == 'class') {
                                                                  $el.removeClass(lastClass).addClass(val);

[delambo]

@eddie168 Thanks for the heads up. I cleaned that up, and more. You can find the fix on master.