Update README & CI Workflow

.github/workflows/build.yml

@@ -8,6 +8,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Validate Gradle Wrapper
         uses: gradle/actions/wrapper-validation@v3

README.md

@@ -20,7 +20,12 @@ it's installed.
 
 ### Compiling
 
-To compile on *nix operating systems, run:
+First, clone this repository using:
+```shell
+git clone https://github.com/NLR-DevTeam/ShowMySkinParts --recursive --depth 1
+```
+
+Then, to compile on *nix operating systems, run:
 
 ```shell
 chmod +x gradlew