Was thinking about replacing

```ruby
    chef.log_level = :debug unless ENV['PROVISO_DEBUG'].nil?
```

with

```ruby
    chef.log_level = :debug if debug_mode?
```

And pulling the methods out into `lib/priviso/helper.rb` or something. I figure if we build this like a real ruby project (ie. a gem), we might eventually want to package it up as a CLI tool. Anyhow, that's definitely a larger point of discussion, but would anyone be in favour of making the code more self-documenting like suggested above, or would a `lib/` directory be overboard?