Update README.md

Author: viniciussanchez

README.md

@@ -5,21 +5,17 @@ Sample Horse Server
 ```delphi
 uses Horse, Horse.Jhonson, Horse.HandleException, System.SysUtils;
 
-var
-  App: THorse;
-
 begin
-  App := THorse.Create(9000);
-
-  App.Use(Jhonson);
-  App.Use(HandleException);
+  THorse
+    .Use(Jhonson)
+    .Use(HandleException);
 
-  App.Get('ping',
+  THorse.Get('/ping',
     procedure(Req: THorseRequest; Res: THorseResponse; Next: TProc)
     begin
-      raise Exception.Create('My Error!');
+      raise EHorseException.Create('My Error!');
     end);
 
-  App.Start;
+  THorse.Listen(9000);
 end.
 ```