bump amqp.node version to 0.4.4 (Node 4.x)

[jcollum]

I tried to fork and update but one of the tests is failing:

08:01 ~/work/rabbit.js  (master)$ ./node_modules/mocha/bin/mocha --ui exports test -g 'closeConne'

Using connection parameters:
"amqp://localhost"

  1) closeConnectionWithoutSocket
Potentially unhandled rejection [1] IllegalOperationError: Connection closed (Closed by client)
    at Connection.close (/Users/collumj/work/rabbit.js/node_modules/amqplib/lib/connection.js:405:14)
    at ChannelModel.CM.close (/Users/collumj/work/rabbit.js/node_modules/amqplib/lib/channel_model.js:33:19)
    at /Users/collumj/work/rabbit.js/lib/sockets.js:81:7
    at tryCatchReject (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/makePromise.js:840:30)
    at runContinuation1 (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/makePromise.js:799:4)
    at Fulfilled.when (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/makePromise.js:590:4)
    at ContinuationTask.run (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/makePromise.js:697:24)
    at Scheduler._drain (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/Scheduler.js:62:19)
    at Scheduler.drain (/Users/collumj/work/rabbit.js/node_modules/amqplib/node_modules/when/lib/Scheduler.js:27:9)
    at doNTCallback0 (node.js:407:9)
    at process._tickCallback (node.js:336:13)

  0 passing (2m)
  1 failing

  1)  closeConnectionWithoutSocket:
     Error: done() invoked with non-Error: Closed by client
      at Context.closeAndDone (test/tests.js:50:15)
      at Connection.C.toClosed (node_modules/amqplib/lib/connection.js:411:8)
      at Connection.accept (node_modules/amqplib/lib/connection.js:378:12)
      at Socket.go (node_modules/amqplib/lib/connection.js:474:48)
      at emitReadable_ (_stream_readable.js:411:10)
      at emitReadable (_stream_readable.js:405:7)
      at readableAddChunk (_stream_readable.js:157:11)
      at Socket.Readable.push (_stream_readable.js:110:10)
      at TCP.onread (net.js:523:20)

I couldn't make any sense out of that error message. Anyway, I thought you'd like to know that only one of your tests is failing when you bump to amqplib 0.4.x and node 4.0.x. If you'd like me to submit a pull req even though the test is failing let me know.

https://github.com/jcollum/rabbit.js

[jcollum]

Hey @squaremo did you know that amqplib got a version bump around Sep 16th?