$ composer -sdev create-project k1low/imgin ./app/webroot/img
...
Writing lock file
Generating autoload files
Do you want to remove the existing VCS (.git, .svn..) history? [Y,n]? Y
/img/foo/bar/large.jpg
/img/100x120/foo/bar/large.jpg
$ php app/webroot/img/imgin.php clearcache /path/to/app/webroot/img/foo/bar/large.jpg
$ php app/webroot/img/imgin.php clearcache --all
https://s3-ap-northeast-1.amazonaws.com/s3-bucket-name/foo/bar/large.jpg
/img/foo/bar/large.jpg
/img/100x120/foo/bar/large.jpg
$ php app/webroot/img/imgin.php clearcache /path/to/app/webroot/img/foo/bar/large.jpg
TODO
under MIT License