Support custom key prefix for jobs
Created by: kulbirsaini
Useful in larger deployments.
PR #177
Example:
var Queue = require('bull');
var videoQueue = Queue('transcode', 6379, '127.0.0.1', { keyPrefix: 'us_jobs' });
// Results in redis keys like
// us_jobs:transcode:id
// us_jobs:transcode:1231
var videoQueue = Queue('transcode', 6379, '127.0.0.1', { keyPrefix: 'in_jobs' });
// Results in redis keys like
// in_jobs:transcode:id
// in_jobs:transcode:1231