Updated README

README.md

@@ -10,15 +10,23 @@ The game has only one runtime dependency: The [raylib](https://www.raylib.com/)
 
 This application uses [Meson](https://mesonbuild.com/) as a build system. To build the application:
 1. Install meson from the link above.
-2. Set up the build directory.
+
+2. Clone the repository.
+
+3. Update all submodules:
+	```
+	git submodule update --init --recursive
+	```
+
+3. Set up the build directory.
 	```
 	meson setup build
 	```
-3. Compile the application. Meson should use a system installation of raylib, if it exists. If not, it falls back to a bundled version.
+4. Compile the application. Meson should use a system installation of raylib, if it exists. If not, it falls back to a bundled version.
 	```
 	meson compile -C build
 	```
-4. You can also create a statically-linked version of the game (with no runtime dependencies) on Linux by running the following commands:
+5. You can also create a statically-linked version of the game (with no runtime dependencies) on Linux by running the following commands:
 
 	 ```
 	 meson configure -Ddefault_library=static build/