add tut page for HttpServer

 #634

tutorial/compatibility.md

@@ -1,9 +1,9 @@
 ---
 layout: page
-title: QuickFIX .NET Wrapper Compatibility
-menu_title: QuickFIX .NET Wrapper Compatibility
+title: Compatibility with old QuickFIX .NET Wrapper
+menu_title: Compatibility with old QuickFIX .NET Wrapper
 type: tutorial
-weight: 16
+weight: 50
 ---
 
 QuickFIX/n is not compatible with the [QuickFIX C++ .NET wrapper][0]. This means

tutorial/http-server.md

@@ -0,0 +1,33 @@
+---
+layout: page
+title: HttpServer Tool
+menu_title: HttpServer Tool
+type: tutorial
+weight: 15
+---
+
+QuickFIX/n provides a simple HttpServer that can be used to observe
+and manage certain aspects of the Sessions as defined in your settings file.
+
+**Warning:** *Use at your own risk.  This might be better considered as a
+demo or educational tool.  We don't recommend using it as a management
+tool for a production system.*
+
+It is simple to create and run:
+
+```
+# This should be in the same block that
+#   instantiates & starts your initiator or acceptor
+
+HttpServer srv = new HttpServer(
+    "http://127.0.0.1:5080", sessionSettings);
+srv.Start();
+```
+
+By pointing a browser to the site that it publishes,
+you can observe your sessions, examine current
+sequence numbers and logon status,
+and review/toggle/adjust many session settings.
+
+For an example of an app that uses it, see the "Executor" project in the Examples folder.
+