Change order of disabled property as requested.

Author: lucas-issa

README.md

@@ -114,5 +114,5 @@ Individual nodes within the `nodes` property can have the following structure:
 | `value`     | mixed  | **Required**. The node's value. |
 | `children`  | array  | An array of child nodes.        |
 | `className` | string | A className to add to the node. |
-| `icon`      | mixed  | A custom icon for the node.     |
 | `disabled`  | bool   | Disable node.                   |
+| `icon`      | mixed  | A custom icon for the node.     |