Edited Feature: completions for mongoose models [941]

```
var mongoose = require('mongoose');

var kittySchema = mongoose.Schema({ name: String });

var Kitten = mongoose.model('Kitten', kittySchema);

var fluffy = new Kitten({ name: 'fluffy' });
console.log(fluffy.name); // 'Silence'

fluffy.save(function (err, fluffy) {
if (err) return console.error(err);
});

Kitten.find(function (err, kittens) {
if (err) return console.error(err);
console.log(kittens)
});
```

No completions on Kitten (name, save, find)

(there are some other find functions that should be present on Kitten)

Example taken from: http://mongoosejs.com/docs/index.html