update comment on ignoring repositories.config
fix magento root files

without leading slash, it ignores all files with these names (cron.php,
get.php, index.php, api.php), whereveer they are
Merge pull request #1323 from aurmil/magento-root-files

Fix Magento PHP root files names patterns
Merge pull request #1218 from bbodenmiller/patch-3

update comment on ignoring repositories.config