Link to the phar does not point to the latest release

[mlb6]

The link in the README file does not point to the latest release. In the version hosted on digilist.de there is still the issue regarding the option --disable-structure.

I suggest to replace this link by this one, which will always redirect to the latest version : https://github.com/digilist/SnakeDumper/releases/latest/download/snakedumper.phar

Also the latest fixes merged into the master branch have not been tagged yet.

Thanks for this great project.