Ignore Vim .swp files.
diff --git a/.hgignore b/.hgignore
index 3dda95c..e928644 100644
--- a/.hgignore
+++ b/.hgignore
@@ -39,6 +39,7 @@
 
 syntax: glob
 libpython*.a
+*.swp
 *.o
 *.pyc
 *.pyo