Add custom field formatter classes to ease theming.

Hi!

I am creating some simple "Formatter" Classes for different field types, to make templating for entities easier. If think it would be great if those formatting classes could be integrated into wrappers_delight.

The basic usage looks like this (eg inside a node--page.tpl.php file):

$page = new PageNodeWrapper($node);

// get the summary or a trimmed version of the body
print $page->formatterBody()->summary(250);

// iterate over all images and print them as thumbnails.
foreach ($page->formatterImages() as $image) {
  print $image->setImageStyle('thumbnail')->img();        
}

I have played around this afternoon and made a patch with integrated some formatter classes into your wrappers.

It would be great if you think such a features could be integrated in wrappers_delight - otherwise I might go for an own module.