[Suggestion/Question] Simplifying generation of URL's

[jadonbrownza]

Q	A
Bug?	no
New Feature?	yes
Framework	Laravel
Framework version	5.x.y
Package version	1.x.y
PHP version	7.x.y

Could the generation of URL's not be simplified using a Facade?

Currently we need to use:
app('Dingo\Api\Routing\UrlGenerator')->version('v1')->route('users.index');

This feels lengthly, from:
route('api.v1.users.index');

I'm thinking that something like this could be better:
DingoRoute('users.index') - Uses config.api.version to find the correct route in this case, or you could be more specific:
DingoRoute('users.index', 'v1')

[specialtactics]

Hi, I've made this PR to implement this suggestion;

#1641

Basically so long as you have your Dingo API facade set up in your app config, eg:

        'API' => Dingo\Api\Facade\API::class,

You can write code like this:

API::route('users.index');

Noting to import API into your file.