Replace echo to flushable stdout

[andras-tim]

Added outPath and forceFlush arguments

FYI: This is useful, when a custom phpunit printer explicit flushing
its results.

[johnkary]

Hi @andras-tim Do you have an example of a custom PHPUnit printer? Especially one you're using?

[andras-tim]

Here is an example printer:

class ForceStdoutFlushPrinter extends \PHPUnit_TextUI_ResultPrinter                                                        
{                                                                                                                       
    public function __construct($out = NULL, $verbose = FALSE, $colors = FALSE, $debug = FALSE)                         
    {                                                                                                                   
        parent::__construct('php://stdout', $verbose, $colors, $debug);                                                 
        $this->setAutoFlush(True);                                                                                      
    }                                                                                                                   
}                                                                                                                       

[HonzaMac]

Hi! Is there any reason, why we don't merge this? :)