some trivial setup.py cleanups until we convert

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

setup.py

@@ -1,5 +1,6 @@
 """Setuptools configuration."""
 import os
+
 from setuptools import find_packages, setup
 
 import versioneer
@@ -8,6 +9,7 @@ HERE = os.path.dirname(os.path.abspath(__file__))
 
 
 def extract_requires():
+    """Get package requirements from the .in file."""
     with open(os.path.join(HERE, 'requirements/requirements.in'), 'r') as reqs:
         return [line.split(' ')[0] for line in reqs if not line[0] == '-']