Rely on host data folder

Change-Id: I549e60e3e5214809a8e3573a2469f3b7c6208834
diff --git a/.gitignore b/.gitignore
index 0637fd6..b6e7988 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/data
 /todo.org
 /myindex
 /sandbox