fix setup to include contrib module

Author: destos

setup.py

@@ -4,7 +4,7 @@
 
 setup(
  name = 'django-webpack-loader',
- packages = ['webpack_loader', 'webpack_loader/templatetags'], # this must be the same as the name above
+ packages = ['webpack_loader', 'webpack_loader/templatetags', 'webpack_loader/contrib'],
  version = version,
  description = 'Load your webpack bundles and chunks in django',
  author = 'Owais Lone',