C++ Visual Studio 13 using threads: minimal example not working

i got a minimal example from http://ift.tt/1cF1r9u for the implementation of threads.

Unfortunately this example did not compile and ERROR C2664 is thrown:

// thread example
#include <iostream>       // std::cout
#include <thread>         // std::thread

void foo() 
{
  // do stuff...
}

void bar(int x)
{
  // do stuff...
}

int main() 
{
  std::thread first (foo);     // spawn new thread that calls foo()
  std::thread second (bar,0);  // spawn new thread that calls bar(0)

  std::cout << "main, foo and bar now execute concurrently...\n";

  // synchronize threads:
   first.join();                // pauses until first finishes
  second.join();               // pauses until second finishes

  std::cout << "foo and bar completed.\n";

  return 0;
}

error C2664: 'std::thread::thread(const std::thread &)' : cannot convert argument n from 'void' to 'std::thread &&'

Can someone explain what ist wrong with the example // with Visual Studio?

Thanks