laravel/framework — pull request #4982 by robclancy (2014-07-08 15:01:58+00:00)
Title: added the ability to pass classes into route bindings

Copied the way it is done for events pretty much.

So allows for...
```php
// this will bind to BindingClass@bind
Route::bind('foo', 'BindingClass');

// you can specify method too like normal
Route::bind('user', 'UserRepository@find');
```