Windows compatible posix_kill method

[yes8080]

1. Remove "ext-posix": "*",from composer.json
2. Change line 93 of the src/Console/PurgeCommand.php file to

            if (function_exists('posix_kill')) {
                posix_kill($processId, SIGTERM);
            } elseif (function_exists('exec') && strstr(PHP_OS, 'WIN')) {
                exec("taskkill /F /PID $processId") ? TRUE : FALSE;
            }

andsrc/Console/ContinueCommand.php src/Console/PauseCommand.php src/Console/TerminateCommand.php

[mfn]

Remove "ext-posix": "*",from composer.json

This would miss then the proper requirements (at least for the system supporting it).

What is the proper composer declaration so this works for both Unix/Windows environments?

[driesvints]

Closing this in favor of #170