Update vsomeip README

crates/vsomeip-rs/README.md

@@ -2,7 +2,6 @@
 
 Rust bindings to [vsomeip](https://github.com/COVESA/vsomeip)
 
-
 ### vsomeip-sys
 This is the low-level binding to the vsomeip library. It is a direct mapping of the C++ API to Rust. This crate is not intended to be used directly by the user. It is used by the `vsomeip-rs` crate to provide a safe and idiomatic Rust API to the user.
 
@@ -17,13 +16,59 @@ To use the vsomeip library, you need to install it first.
 ```bash
 git clone [email protected]:COVESA/vsomeip.git
 cd vsomeip
+# Check out to a compatible version of vsomeip 
+git checkout cf497232adf84f55947f7a24e1b64e04b49f1f38
 mkdir build
 cd build
-cmake ..
+# See these two issues for why this flag needs to be set
+# https://github.com/COVESA/vsomeip/issues/688
+# https://github.com/COVESA/vsomeip/issues/527
+cmake -E env CXXFLAGS="-Wno-error=stringop-overflow" cmake .. -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_BUILD_TYPE=Debug
 make
 sudo make install
 ```
 
+## Example usage
+```rust
+use vsomeip_rs::*;
+
+const SERVICE_ID: ServiceId = 0x1111;
+const INSTANCE_ID: InstanceId = 0x2222;
+const METHOD_ID: MethodId = 0x3333;
+
+fn server() {
+    let runtime = Runtime::get();
+    let app = runtime.create_application_with_name("hello_world_service").expect("Failed to create server");
+
+    let app_clone = app.clone();
+    let app_clone1 = app.clone();
+    app.register_state_handler(move |state| {
+        if state == State::Registered {
+            app_clone.offer_service(SERVICE_ID, INSTANCE_ID, 0, 0);
+        }
+    });
+
+    let mut state = 0;
+    app.register_message_handler(SERVICE_ID, INSTANCE_ID, METHOD_ID, move |request| {
+        let payload = request.get_payload();
+        let bytes = payload.get_data();
+        let response_text = std::str::from_utf8(bytes).unwrap();
+        println!("{}", response_text);
+
+        let mut response = Message::response(request);
+        response.set_payload(&Payload::with_data(format!("Hello {}", state).as_bytes()));
+
+        app_clone1.send(&response);
+
+        state += 1;
+    });
+
+    app.start();
+
+    cleanup(app);
+}
+```
+
 ## Build and Run
 
 The vsomeip library is loaded dynamically at runtime, so it must be present in the dynamic library path when running any vsomeip application.