This puts /api/v1 in front of all controller requests. Sort of like route grouping. Useful for API development. If api is updated you can create a v2 grouping

routes.php

// Route group for API versioning
Route::group(array('prefix' => 'api/v1', 'before' => 'auth.basic'), function()
{
    Route::resource('url', 'UrlController');
    Route::resource('user','UserController');
});