Enable HTTP Verb in Routing

Using array in `config/routes.php` for HTTP Verb. HTTP Verb is case-insensitive

e.g:
`$route['(:any)']['POST'] = "controller/any_post_method";`
`$route['path']['get'] = "controller/path_get_method";`
`$route['path']['(:any)'] = "controller/path_any_method";`

Using `(:any)` or not using http verb at all will produce same result
e.g: `$route['path']['(:any)']` is the same as `$route['path']`

So it won't break existing route