include_package_data is required to build wheels from published sources

Author: dangra

setup.py

@@ -102,6 +102,7 @@ def is_not_module(filename):
     'cmdclass': cmdclasses,
     'data_files': data_files,
     'scripts': scripts,
+    'include_package_data': True,
     'classifiers': [
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',