Add recursive init in readme (just in case).
@@ -534,7 +534,7 @@ Usually the developer is the same who does the fork, but it may be possible that
Follow these steps to build and install **METACALL** manually.
``` sh
-git clone https://github.com/metacall/core.git
+git clone --recursive https://github.com/metacall/core.git
mkdir core/build && cd core/build
cmake ..
cmake --build . --target install
