added comprehensive usage for folks who don't even have SSL enabled

readme.md

@@ -10,23 +10,33 @@ PS> Install-Package Owin.ForceHttps
 
 # Usage
 
+1. ### Make sure your project has SSL enabled
+
+    * Find your web project and hit `F4` to get the Properties window
+    * Toggle `SSL Enabled` to `True` and note the port number for the `SSL URL`
+    ![VS project Properties window snip](http://i.imgur.com/kn8ENIa.png)
+
+2. ### Add `app.UseForcedHttps()` to `Startup.cs` class:
+
 ```csharp
 using Owin;
 using Microsoft.Owin;
 
 namespace MyApplication {
     public class Startup {
         public void Configuration(IAppBuilder app) {
+#if DEBUG
+            app.UseForcedHttps(44309);  // IIS Express
+#else
             app.UseForcedHttps(443);
+#endif
 
             //configure other middleware
         }
     }
 }
 ```
 
-There is also an overload which allows you to specify a different port for HTTPS. Useful for local development.
-
 # License
 
 MIT