Added ReDoc

ScrumTaskboard/Startup.cs

@@ -107,8 +107,14 @@ namespace ScrumTaskboard
                 };
             });
 
-            //Use the SwaggerUi v3 to provide a SwaggerUI based API explorer
+            //Use the SwaggerUi v3 to provide a SwaggerUI based API explorer at "/swagger"
             app.UseSwaggerUi3();
+
+            //Use Redoc to provide a ReDoc based API explorer at "/redoc"
+            app.UseReDoc(options =>
+            {
+                options.Path = "/redoc";
+            });
         }
 
         /// <summary>