mout/mout — pull request #17 by millermedeiros (2013-01-21 16:38:05+00:00)
Title: add array/filterBy

so we can do:

```js
var target = filterBy(users, {age: 27, gender: 'male'});
```

instead of:

```js
var target = filter(users, function(user){
return user.age === 27 && user.gender === 'male';
});
```

see #15