Updated package.json. async ^1.5.0

[ohjimijimijimi]

Hi,
We recently updated express-jwt in our platform and we had some issues with the latest version in conjunction with our test suite (in particular mochajs and supertest).

After some digging we realized the issue was inside the async library. In particular when inside the async.waterfall the async.setImmediate method is called.

We found this issue caolan/async#696.

So, we decided to update async to the latest version and give it a try. Everything worked again.

[janriemer]

Hi,
in accordance to this PR, we should consider upgrading async to version 2.0.0 (as of this writing RC3 is the newest). Async v2 comes with functions as individual modules, so we just need to do:
var waterfall = require('async/waterfall').
Any thoughts on this and the referenced PR? I'm wondering, why this PR has been left unanswered for so long. 😧

[jfromaniello]

Sorry for the delay, async 2 seems to be not released yet.. I will stick with this one.

[janriemer]

Hi @jfromaniello,
OK, nice! Yeah, seems that RC of async 2 will change versions quickly until final release.
I will watch out for the 2.0.0 release and come back here when it is released. 😉