Setting up cakePHP on shared host and remove /app/ in URL


I've installed cakePHP on a shared server where I can't set the Apache webroot, so it's currently pointing to /public_html. In that folder I have /cake, /app, /vendors, etc. Everything works fine; the only problem is that rather than links to controllers/actions being, there is an addition /app/ in the URL, like this:

I want to get rid of /app/ in my URL. Any suggestions? If you need anymore info (.htaccess files, etc.) let me know.