fix licence in setup.py

setup.py

@@ -17,7 +17,7 @@ setup(name='iobber',
 			'data/model-kpwr03/*.cr', 'data/model-kpwr03/*.lex']
 		# TODO: pre-trained models as well
 	},
-	license='GPL', 
+	license='LGPL', 
 	entry_points={
 		'console_scripts': [
 			'iobber = iobber.iobber:go'