* @cfg {Array} fields An array of field definition objects, or field name strings.
* @cfg {Object} an existing reader (eg. copied from another store)
* @cfg {Array} data The multi-dimensional array of data
+ * @cfg {Roo.data.DataProxy} proxy [not-required]
+ * @cfg {Roo.data.Reader} reader [not-required]
* @constructor
* @param {Object} config
*/