Minimal Example on Windows failing
Just tried the minimal chat example from the homepage on a Windows 10 x64 with PHP 5.6.13.
Upon execution of the WS server I get:

```
PHP Warning:  stream_select(): unable to select [2]: No such file or directory (max_fd=272) in C:\Users\<DIR>\vendor\react\event-loop\StreamSelectLoop.php on line 255

Warning: stream_select(): unable to select [2]: No such file or directory (max_fd=272) in C:\Users\<DIR>\vendor\react\event-loop\StreamSelectLoop.php on line 255
```

It works fine on linux though. I did use the exact same code on Windows 8 some time ago though and back then it worked just fine. Is there some requirement or configuration I'm missing?
I did a quick search on the matter, but they lack an answer:
#327 and https://groups.google.com/forum/#!topic/ratchet-php/KyWvtK-JIVY
