mongoid/mongoid — pull request #3388 by hbakhtiyor (2013-11-10 14:47:06+00:00)
Title: Field type accepts a symbol and string objects

Added ActiveRecord column parameter style too.

e.g
```ruby
Field.new(:name, :string, default: :mongoid)
```
```ruby
...
field :name, type: :string
...
```

What do you think about these?
If you accept I will add in `field` macro too.