marcello3d/node-buffalo — pull request #11 by yorkie (2013-11-30 08:24:15+00:00)
Title: objectId: create a ObjectId by passing a timestamp

See below code:
```javascript
var obj = new ObjectId(Date.now() - 24*60*60*1000);
db.collection('myColl').find({_id:{
'$gt': obj
}}).toArray(function (err, list) {
// here I can get the latest 24 hours documents from the inserted time.
})
```