Added (simple) module-level docstrings for all modules
diff --git a/setup.py b/setup.py
index 92a0c53..aecd37f 100755
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,9 @@
 #! /usr/bin/env python
 
+"""
+Distutils setup file for Scapy.
+"""
+
 
 from distutils import archive_util
 from distutils import sysconfig