update readme with clone --recursive instructions

diff --git a/README.md b/README.md
index 186816e3fe62426cb74cfb739571845ff630502a..862179c61e2be6b01d90392721a93cfa6ead1ca8 100644 (file)
--- a/README.md
+++ b/README.md
@@ -2,10 +2,16 @@
 
 This website is built with [Hugo](https://gohugo.io).
 
+To clone this project use the --recursive option to also clone the themes/learn submodule:
+
+   ```
+   git clone --recursive git@github.com:MagicalBitcoin/magicalbitcoin.org.git
+   ```
+
 If you are editing this website, you can run
 
-```
-hugo server
-```
+   ```
+   hugo server
+   ```
 
 to start a local webserver at [`http://localhost:1313`](http://localhost:1313).