FEATURE: adjust setup metadata (#52)

Author: Simon Krull

setup.py

@@ -42,7 +42,9 @@
     version=__version__,
     author='Divio AG',
     author_email='info@divio.ch',
-    url='https://github.com/divio/djangocms-file',
+    maintainer='Django CMS Association and contributors',
+    maintainer_email='info@django-cms.org',
+    url='https://github.com/django-cms/djangocms-file',
     license='BSD-3-Clause',
     description='Adds file plugin to django CMS',
     long_description=open('README.rst').read(),