- This feed is necessary only if you want also recommend categories itselves (thus we need their URL and mapping to products from the product feed via CATEGORYTEXT).
 
- Tree of categories used in product feed
 
- TITLE must be mappable to categories in CATEGORYTEXT in product feed
 
 
	| Field name | Field type | Required | Description | 
	| TITLE | String | Yes | Category’s title | 
	| URL | String | Yes | Direct url to category | 
	| PARAMETER | [par1,par2] | No | Optional parameters for given category | 
Sample XML:
<?xml version="1.0" encoding="utf-8"?>
<CATEGORY>
     <ITEM>
          <TITLE>Title 1</Title>
          <URL>http://www.someurl.com/path/to/category1</URL>
          <ITEM>
               <TITLE>Title 2</Title>
               <URL>http://www.someurl.com/path/to/category2</URL>
          </ITEM>
     </ITEM>
     <ITEM>
          <TITLE>Title 3</Title>
          <URL>http://www.someurl.com/path/to/category3</URL>
          <ITEM>
               <TITLE>Title 4</Title>
               <URL>http://www.someurl.com/path/to/category4</URL>
               <ITEM>
                    <TITLE>Title 5</Title>
                    <URL>http://www.someurl.com/path/to/category5</URL>
               </ITEM>
          </ITEM>
     </ITEM>
</CATEGORY>