diff --git a/.gitignore b/.gitignore
index cacfcd7..d1cb0bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,4 +22,5 @@ build/
 *.js
 
 # data
-data/
+*.csv
+
diff --git a/data/.gitkeep b/data/.gitkeep
new file mode 100644
index 0000000..e69de29