diff --git a/.gitignore b/.gitignore
index 71ae0ef..41236fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,8 @@
 *.dylib
 *.so
 *.whl
+*.csv
+*.zip
 coverage.html/*
 _cache/*
 .coverage
diff --git a/_doc/index.rst b/_doc/index.rst
index 523d46a..ef2a9b7 100644
--- a/_doc/index.rst
+++ b/_doc/index.rst
@@ -52,11 +52,17 @@ and implements other functionalities for machine learning.
 
 .. toctree::
     :maxdepth: 1
+    :caption: Contents
 
     tutorial/index
     auto_examples/index
     api/index
     i_ex
+
+.. toctree::
+    :maxdepth: 1
+    :caption: More
+
     CHANGELOGS
     license