diff --git a/.gitignore b/.gitignore
index 2b3e6d5..0b9b452 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-.svn
-target
+.svn
+target
diff --git a/Figures for documentation/ladders_explained.png b/Figures for documentation/ladders_explained.png
new file mode 100644
index 0000000..1de3ad5
Binary files /dev/null and b/Figures for documentation/ladders_explained.png differ