Support redis url format

Instead of having to specify host, port and auth in the redis options, it would be nice to be able to just specify the redis url, which would integrate nicely with e.g. various Redis cloud service with Heroku.

So instead of:

var queue = kue.createQueue({
  redis: {
    host: redisHost,
    port: redisPort,
    auth: redisAuth
  }
});

we could use

var queue = kue.createQueue({
  redis: {
    url: redisUrl
  }
});

[behrad]

https://github.com/mranney/node_redis/issues/243 https://github.com/ddollar/redis-url https://github.com/laggyluke/node-parse-redis-url

Since node_redis (which kue is using for redis connections) is not directly supporting redis urls, I’m closing this for now.

[nilsga]

Sure, but most packages already support this, so not having to do it in two different ways, when using other redis dependent packages would be nice.