Fix 404 url by adding Request getBasePath

[erlangparasu]

Closes #358, #351

[erlangparasu]

Make it works with custom base url ( in file .env ) like :
APP_URL=http://localhost/projects/php7.2/my-laravel-app-001/public

without getBasePath(), generated url will look like:
http://localhost/laravel-websockets
that produce 404 http error

after adding getBasePath(), generated url will be:
http://localhost/projects/php7.2/my-laravel-app-001/public/laravel-websockets
200

[rennokki]

I honestly think it would better fit the url() helper: https://laravel.com/docs/7.x/helpers#method-url

[erlangparasu]

@rennokki thank you! looks simpler {{ url('/auth') }} 👍