Add a note about configuring git to always update submodules

1 files changed, 8 insertions, 0 deletions

diff --git a/README.md b/README.md
index de51702ae..fc50f2af7 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,14 @@ git submodule update --init
 git pull --recurse-submodules
 ```
 
+We recommend applying this Git (2.15+) configuration to ensure
+project submodules are kept in-sync whenever you `git pull`:
+
+``` shell
+git config --global submodule.recurse true
+```
+
+
 ## Build instructions
 
 Read [BUILD.md] for the comprehensive compilation guide.