onRendered helper

Thanks for this Abigail !

Perhaps the Meteor syntax has changed since this package was originally written. Currently the autocomplete writes:

```
Template.name.onRendered = function(){}
```

When the up-to-date (Sept 2015) syntax should be: 

```
Template.name.onRendered( function() { } )
```

http://docs.meteor.com/#/full/template_onRendered
