Error Adding Controller with views using Entity Framework in Asp.NET

When you try to add the following error appears:

Model:

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Web;namespaceMVCEntity.Models{publicclassUsuario{publicintId{get;set;}publicStringLogin{get;set;}publicStringSenha{get;set;}}}

FileDatewhereImaketheDBsettings:

usingSystem.Web;usingMVCEntity.Models;usingSystem.Data.Entity;usingSystem.Data.Entity.ModelConfiguration.Conventions;namespaceMVCEntity.Data{publicclassTestandoMVCContext:DbContext{publicTestandoMVCContext():base("TestandoMVC_Desenv")
        {

        }

        public DbSet<Usuario> Usuario { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();

            base.OnModelCreating(modelBuilder);
        }
    }
}

Lines added in my Web.config:

  <connectionString>
    <add name="TestandoMVC_Desenv" connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=E:\Projetos\asp\MVCEntity\MVCEntity\App_Data\TestandoMVC_DB.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
  </connectionString>
  <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
  <system.data>
    <DbProviderFactories>
      <add name="SqlClient Data Provider"
       invariant="System.Data.SqlClient"
       description=".Net Framework Data Provider for SqlServer"
       type="System.Data.SqlClient.SqlClientFactory, System.Data,   
      Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
    </DbProviderFactories>
  </system.data>

HELP !!!