I have created a new webcontroller with specific functionality and I want this webcontroller as a home page of odoo 9.0.

I have tried to put @http.route('/', type='http', auth='public', website=True) in main.py of my custom webcontroller file as a route, but still it redirect to default home page of odoo. 

But if I put url as @http.route('/index', type='http', auth='public', website=True), the page is working fine.

So my question is what is best way to replace existing odoo home page with custom controller or module.

Any help really appreciated.