Fórum Erro Unsuported Context type ao incluir um Controller Asp.net MVC 4 #570068

<add name="conexaoSQL" connectionString="Data Source=PC01000\\SQLEXPRESS; Initial Catalog=BANCODB; User Id=sa; Password=MinhaSenha;" providerName="System.Data.SqlClient" />

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;


namespace projeto.Models
{
    public class conexaoSQL : DbContext
    {

        public conexaoSQL() : base("name=conexaoSQL")
        { 
        
        
        }




    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;

namespace projeto.Models
{
    public class Usuario
    {

        [Key]
        public Int32 Id { get; set; }
        
        public string Nome { get; set; }

        public string Telefone { get; set; }

        public string Celular { get; set; }

        public string Email { get; set; }

        public string Endereco { get; set; }


    }
}