Ignoring vendor files
Improving some function docs and including a `confirm()` method, a simplification over `choose()`
Merge branch 'confirm' of github.com:igorsantos07/php-cli-tools

Conflicts:
	lib/cli/cli.php
Enabling clean hidden input

+ Added `Shell::hide()` that would use `stty` to hide terminal input/output
* hiding behaviour was moved from `prompt` to `input`
* dropped black background in place of `Shell::hide()`