Do not include config.php in repository

[RichieB2B]

Configuration files are likely to be customized, but since Config/config.php is part of the repository it is overwritten at every "php composer.phar update" run. Wouldn't it be better to provide a config.default.php and let this be copied to config.php at install time? Also, then add Config/config.php to .gitignore so git will not complain about it being there.