title: Flush all cache in Laravel 4
body: <p>Is there a way to flush all cache in Laravel 4? I'm using <em>file</em> for caching. I read on the docs that you can use <code>Cache::forget('key')</code> , but what if I need to delete all the cache?</p>
  
  <p>An artisan command can also be useful, I think there's an issue on the repo, but not sure if it's implemented yet.</p>
  
  <p>Thanks!</p>