Fullscreen/bh — pull request #42 by claudiob (2014-11-06 18:52:08+00:00)
Title: Pass extra class in alert box

Before this commit, the `alert_box` helper ignored unknown options.
For instance the code:

```rhtml
<%= alert_box message, priority: priority, class: 'important', id: 'alert' %>
```

would simply generate the following HTML

```html

...

```

ignoring the `:class` and `:id` parameter. After this commit, the result is:

```html

...

```