From bad9fefdaef3aa240a0bfec86e7eccb442e452b4 Mon Sep 17 00:00:00 2001
From: Abhishek koserwal <abhishek.koserwal@gmail.com>
Date: Mon, 28 May 2018 17:27:15 +0530
Subject: [PATCH] Update build instructions

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 19ef96fae01..04816762f14 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,7 @@ Read ["Installation"] from [The Book].
 3. Build and install:
 
     ```sh
+    $ git submodule update --init --recursive --progress
     $ ./x.py build && sudo ./x.py install
     ```