xing/flag_shih_tzu — pull request #19 by miyagawa (2012-06-22 00:36:22+00:00)
Title: Added :bang_methods option to enable bang methods for each flag

This change allows you to set `:bang_methods` option in `has_flags` that enables more sugar like:

```
spaceship = Spaceship.new
spaceship.warpdrive! # spaceship.warpdrive = true
spaceship.not_shields! # spaceship.shields = false
```