Update documentation for Laravel 5.5+ and composer installation

[nathan-io]

Thanks again for this useful package. Wanted to suggest a couple of updates to the readme.

Finally, after the update completes, add the service provider.

This step is no longer necessary since Laravel 5.5 introduced automatic package discovery.

First, edit your project's composer.json file to require jessedp/php-timezones ... Next, update Composer

It would be faster (and safe) to let Composer handle this via: composer require jessedp/php-timezones.

That method would also limit the operation merely to installing your package and its dependency - versus a full composer update, which could potentially introduce a breaking change from some unrelated vendor package.

It also better aligns with a lot of production deployment scripts which would typically include something like composer install --no-dev --no-interaction --prefer-dist --optimize-autoloader rather than composer update.

[jessedp]

Assuming I get to #1 , I'll take care of this as well.

If you've never tried, this is something you could try to update directly (it'll still ask me to confirm). Just hit the edit/pencil icon in the top right corner of the readmen/home page docs and "submit a pull request".