From ec25b8b4501a6021f163a07ab19afc9c1660f28e Mon Sep 17 00:00:00 2001
From: Behnam Esfahbod <behnam@zwnj.org>
Date: Wed, 30 Aug 2017 18:33:22 -0700
Subject: [PATCH] [src/doc] Add README.md

---
 src/doc/README.md | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 src/doc/README.md

diff --git a/src/doc/README.md b/src/doc/README.md
new file mode 100644
index 000000000..e68b5ca60
--- /dev/null
+++ b/src/doc/README.md
@@ -0,0 +1,6 @@
+# Cargo Documentation
+
+NOTE: Cargo documentation is under migration to mdBook-based structure. All the
+`*.md` files here shall be kept in sync with the `*.md` files under `book/src/`.
+See `MIGRATION_MAP` file here and <https://github.com/rust-lang/cargo/pull/4453>
+for details.