fix setup.py to install the new model

setup.py

@@ -14,7 +14,7 @@ setup(name='iobber',
 	package_data={
 		'iobber': [
 			'data/*.ini', 'data/*.ccl', 'data/*.txt', 'data/*.lex',
-			'data/model-kpwr03/*.cr', 'data/model-kpwr03/*.lex']
+			'data/model-kpwr04/*.cr', 'data/model-kpwr04/*.lex']
 		# TODO: pre-trained models as well
 	},
 	license='LGPL',