public ActionResult Buscar(string Nombre)
        {
            string Path = Server.MapPath("~/App_Data/ListaArtistas.xml");

            if(Nombre != null){
                // Retrieve XML document
                string Url = "http://ws.spotify.com/search/1/artist?q=" + Nombre;

                XmlDocument myXMLDocument = new XmlDocument();

                myXMLDocument.Load(Url);

                myXMLDocument.Save(Path);
            }

            XMLReader readXML = new XMLReader();
            var data = readXML.RetrunListaArtistas(Path);

            return View(data.ToList());
        }