Update README.md

README.md

@@ -13,7 +13,7 @@ check out the demo [here](http://kamilkp.github.io/ng-nestable)
 <div ng-nestable ng-model="items">
 	<div>
 		<!-- this element is the template for each menu item -->
-		<!-- the $item is availabla on scope and is the reference to the menu item object -->
+		<!-- the $item is available on scope and is the reference to the menu item object -->
 		{{$item}}
 	</div>
 </div>
@@ -43,4 +43,33 @@ Example `items` object structure:
 ]
 ```
 
+Each nestable element in the DOM gets it's own non-isolated scope just like with `ng-repeat`.
+
 Also the options object can be passed to the directive as the `ng-nestable` attribute. Those options will be passed to the jQuery `nestable` function when creating a nestable.
+
+===
+
+The module also exposes a `$nestableProvider` that can be injected into a `config` block. It provides two methods:
+
+ * `$nestableProvider.modelName(str)` - can be used to set the model name variable inside each nestable element. The default value of model name is `$item`.
+ * `$nestableProvider.defaultOptions(obj)` - can be used to set some default options for the nestable jquery plugin. Those options include the following: (extract from the [jQuery nestable](https://github.com/dbushell/Nestable) readme)
+
+		maxDepth        : number of levels an item can be nested (default 5)
+		group           : group ID to allow dragging between lists (default 0)
+
+		listNodeName    : The HTML element to create for lists (default 'ol')
+		itemNodeName    : The HTML element to create for list items (default 'li')
+		rootClass       : The class of the root element .nestable() was used on (default 'dd')
+		listClass       : The class of all list elements (default 'dd-list')
+		itemClass       : The class of all list item elements (default 'dd-item')
+		dragClass       : The class applied to the list element that is being dragged (default 'dd-dragel')
+		handleClass     : The class of the content element inside each list item (default 'dd-handle')
+		collapsedClass  : The class applied to lists that have been collapsed (default 'dd-collapsed')
+		placeClass      : The class of the placeholder element (default 'dd-placeholder')
+		emptyClass      : The class used for empty list placeholder elements (default 'dd-empty')
+		expandBtnHTML   : The HTML text used to generate a list item expand button (default '<button data-action="expand">Expand></button>')
+		collapseBtnHTML : The HTML text used to generate a list item collapse button (default '<button data-action="collapse">Collapse</button>')
+		
+===
+
+Also note that the `ng-sortable` directive uses [ngModelController](https://docs.angularjs.org/api/ng/type/ngModel.NgModelController) to read and write to the provided model object and is fully compliant with `$formatters` and `$parsers`.