diff --git a/.gitignore b/.gitignore
index 8979f1cc..2521a1fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,7 +40,7 @@ pip-delete-this-directory.txt
 .coverage
 .cache
 cover/
-
+diff_coverage_html/
 # Log files:
 *.log
 
diff --git a/diff_coverage.py b/diff_coverage.py
index 8580b146..bf741ed8 100644
--- a/diff_coverage.py
+++ b/diff_coverage.py
@@ -5,6 +5,12 @@
 
     diff-coverage
 
+    Copyright (c) 2012, Preston Holmes and other contributors.
+    All rights reserved.
+
+    Mainly from https://github.com/ptone/diff-coverage, with modifications to
+    fit the daisycloud-core project directory arrangement.
+
     This module will, in a somewhat inflexible way, compare a diff coverage.py
     data to determine whether lines added or modified in the diff, were executed
     during a coverage session.