jnunemaker/mongomapper — pull request #435 by balexand (2012-07-14 17:50:22+00:00)
Title: Allow options hash to be passed to safe class method

Like this:

```ruby
class Order
include MongoMapper::Document
safe(j: true, w: 'majority')

key :email, String
end
```

See http://www.mongodb.org/display/DOCS/getLastError+Command for details.

I'll create a separate pull-request for the documentation.