Describe usage of tei2korapxml

Change-Id: I05c098c53029a3377f6378ad5e3f84ebed3d4115
diff --git a/.gitignore b/.gitignore
index da7e154..15662c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /todo.org
-/myindex
\ No newline at end of file
+/myindex
+/sandbox
\ No newline at end of file