Update README.md

Author: quantumsheep

README.md

@@ -1,11 +1,23 @@
 # Chromaprint C++ Boilerplate
-Start a Chromaprint C++ project faster than ever!
-You just need to clone this repository wherever you want.
+Start a [Chromaprint](https://github.com/acoustid/chromaprint) C++ project faster than ever!
+
+# How to clone the repository
+Since we are using [git submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules), the repository needs to be cloned in a specific way in order to fetch those submodules.
+
+## With SSH
+```bash
+git clone --recursive git@github.com:quantumsheep/chromaprint-boilerplate.git
+```
+
+## Without SSH
+```bash
+git clone --recursive https://github.com/quantumsheep/chromaprint-boilerplate.git
+```
 
 # How to compile
-If you don't have the `build` directory just do `mkdir build`.
+If you don't have the `build` directory, you need to create it (`mkdir build`).
 
-In the `build` directory:
+In the `build` directory do those commands that will compile the sources with chromaprint linked:
 ```bash
 cmake ..
 cmake --build .