Argument --version does not display version

[sljgcovas]

For those of us that use Phinx as standalone tool, it may be convenient that --version argument actually displays the version number and not only "hey, I'm Phinx":

$ phinx --version
Phinx by CakePHP - https://phinx.org.

The --help says: -V, --version Display this application version

Thanks :)