Update build instructions

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 1c5c765..d211d10 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ It is recommended that you create a ``build`` directory for CMake to generate bu
 ```sh
 git clone https://github.com/cflip/Nonortho
 cd Nonortho
+git submodule init
 git submodule update
 mkdir build && cd build
 cmake ../