coffeescript kue redis createClient with custom host and port

coff-kue-redis-createClient

## 更新外部配置
p.version('0.0.1')
  .option('-p, --port <n>', 'redis server port')
  .option('-h, --host [VALUE]', 'redis server host')
  .parse(process.argv)

p.port = parseInt(p.port) || 6379
p.host = p.host || "localhost"

kue = require 'kue'
redis = require 'redis'

kue.redis.createClient = ->
  client = redis.createClient(p.port, p.host, {"retry_max_delay":3000})

  client.on "error",  (error) ->
    console.error "[redis.on_error] #{error}"

  client.on "end", ->
    console.warn "[kue::redis client::on end]"

  client.on "ready", ->
    console.info "[kue::redis client::on ready] redis client @#{p.host}:#{p.port} is ready to server."

  client.on "reconnecting", (info) ->
    console.info "[kue::redis client::on reconnecting] redis client is reconnecting to datastore:#{p.host}:#{p.port}... delay:#{info.delay}, attempt:#{info.attempt}"

  return client