Update README.md.

Author: Tweety-Lab

README.md

@@ -1,2 +1,35 @@
 # Binaryen.NET
 C# Bindings for the Binaryen WebAssembly toolchain.
+
+## Samples
+
+### Generating IR -> WAT
+```CSharp
+using (var module = new BinaryenModule())
+{
+    // Create a simple function body with a single NOP instruction
+    var body = BinaryenExpression.Nop(module);
+
+    // Add a function with no parameters, no return type, and no locals
+    module.AddFunction(
+        name: "TestMethod",
+        paramTypes: Array.Empty<BinaryenType>(),
+        resultType: BinaryenType.None,
+        localTypes: Array.Empty<BinaryenType>(),
+        body: body);
+
+    // Emit WAT
+    Console.WriteLine(module.ToText());
+}
+```
+
+Web Assembly Text (WAT) Output:
+```WAT
+(module
+ (type $0 (func))
+ (func $TestMethod
+  (nop)
+ )
+)
+```
+