Basic support for reading Features from an AttributeReader.
author: Ian Schneider version: $Id: DefaultFeatureReader.java 20651 2006-07-21 07:51:54Z jgarnett $
Creates a new instance of AbstractFeatureReader
Parameters: attributeReader - AttributeReader for contents Parameters: schema - FeatureType to use, null if not provided throws: SchemaException - If Schema could not be obtained