Install config file.

Author: mdboom

astropy/setup_package.py

@@ -0,0 +1,4 @@
+# Licensed under a 3-clause BSD style license - see LICENSE.rst
+
+def get_package_data():
+    return {'astropy': ['astropy.cfg']}

setup.py

@@ -57,7 +57,7 @@
 package_info = get_package_info()
 
 # Add the project-global data
-package_info['package_data']['astropy'] = ['data/*']
+package_info['package_data'].setdefault('astropy', []).append('data/*')
 
 # Currently the only entry points installed by Astropy are hooks to
 # zest.releaser for doing Astropy's releases