bsiggelkow/jsonify — pull request #12 by andriusch (2012-09-01 11:00:08+00:00)
Title: Extracted Jsonify::Builder#array!

It's often required to start json with an array, something that would create this:

```json
[
{"id": 1, name: "John"},
{"id": 2, name: "Peter"}
]
```

This patch allows doing it like this:

```ruby
json.array!(@people) do |person|
json.id person.id
json.name person.name
end
```