examples: cpp: Add furthuer instructions

examples/cpp/README.md

@@ -1,5 +1,21 @@
-# How to build
+# How to use
+
+For BlueOS (red-pill)
 
 ```shell
+# Prepare the environment with cmake and cargo
+sudo apt-get update && sudo apt-get install cmake git
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+source "$HOME/.cargo/env"
+
+# Clone and move to Cpp folder
+git clone https://github.com/bluerobotics/navigator-lib.git
+cd examples/cpp
+
+# Build with the following commands
 cmake -B build -DCMAKE_BUILD_TYPE=Debug && cmake --build build --config Debug --parallel
+
+# Run the binary
+./build/simple
+
 ```