* Add $queue attribute
This code enables me to change the queue name that the JobPipeline will be pushed to.
Now I can do something like this:
```php
JobPipeline::make([
Jobs\CreateDatabase::class,
Jobs\MigrateDatabase::class,
// Jobs\SeedDatabase::class,
// Your own jobs to prepare the tenant.
// Provision API keys, create S3 buckets, anything you want!
])->send(function (Events\TenantCreated $event)
{
return $event->tenant;
})->onQueue('another-queue')
->shouldBeQueued()
```
* Add .idea directory to gitignore
* The following methods where added: onConnection, onQueue, delay, tries, shouldBeQueuedOn. The signature of shouldBeQueued was changed too.
* reuse shouldBeQueuedOn
* updating docs
* added timeout
* docs updated
* .phpunit.cache/ added to gitignore
* tests for shouldQueueOn method
* leave only shouldBeQueued method
* update README
* remove unnecessary property declarations
* Delete jobpipelinetest.json
* add jobpipelinetest.json as a empty file
* update readme
* simplify tests
* improve code
* improve readme
---------
Co-authored-by: Samuel Štancl <samuel@archte.ch>
