accomodate `-t` and `-l` command line option remocal from Slim

The "translator" and "logic less" shorthand options were deprecated
for some time now and are actually removed in Slim 3.0.0.

The recommended way to reenable these features is by using
different options (e.g. `-r slim/translator`).
add `data` option to inject data into the template

Currently requires a non-released version of Slim, installed via
bundler. Things should ge back to normal, if this PR gets accepted
and a new version of Slim is available:

https://github.com/slim-template/slim/pull/572