Update composer.json

Try fix :
Script yii\composer\Installer::setPermission handling the post-create-project-cmd event terminated with an exception

                                                                                                                                                            
  [ErrorException]                                                                                                                                          
  Argument 1 passed to yii\composer\Installer::setPermission() must be of the type array, object given, called in phar:///usr/local/bin/composer/src/Compo  
  ser/EventDispatcher/EventDispatcher.php on line 202 and defined
Merge pull request #6 from mazurva/patch-1

Update composer.json