Heads up on API change

[AJ ONeal]

I just bumped up the version to 2.2.0.

In order to get FuturesJS to work with Ender.JS I separated all of the submodules into their own npm modules.

i.e.

npm install future join sequence chainify asyncify loop forEachAsync Array.prototype.forEachAsync

instead of 

require('futures/forEachAsync') 

it's now

require('Array.prototype.forEachAsync');

instead of

require('futures/future')

it's now

require('future')

AJ ONeal