migrate doc to wwwroot.

HelloHiAPI.cs

@@ -5,6 +5,16 @@ using System;
 
 namespace Sample
 {
+    /// <summary>
+    /// A sample class demonstrating initialization and usage of the HiAPI framework.
+    /// Shows the basic setup of display engine, MongoDB server, licensing, and other core functionality.
+    /// </summary>
+    /// <remarks>
+    /// This example serves as an entry point for those getting started with HiAPI.
+    /// It demonstrates proper initialization and teardown of key components.
+    /// ### Source Code
+    /// [!code-csharp[SampleCode](~/../Hi.Sample/HelloHiAPI.cs)]
+    /// </remarks>
     public static class HelloHiAPI
     {
         static int Main(string[] args)