Support both array and comma separated string as arguments

Hey Guys,

Don't you guys think this may be a good idea to support both array and comma separated string as arguments for dynamic query function? 

$selectArray = array('id', 'username', 'age');

...
->find(function($query) use ( $selectArray ){
         $query->select( $selectArray );
   }
...


If I'm not mistaken I didn't do this initially because an array can either be an alias or something else. Should have commented on this back when I created it, but it's worth a lookup.