update package.json main to point to the aws file

[ccorcos]

The package.json main field isnt point to anything and gives an error when you try to require it.

❯❯❯ ls node_modules/grunt-aws
README.md    caches       example      node_modules package.json tasks
❯❯❯ node
> require('grunt-aws')
Error: Cannot find module 'grunt-aws'
    at Function.Module._resolveFilename (module.js:339:15)
    at Function.Module._load (module.js:290:25)
    at Module.require (module.js:367:17)
    at require (internal/module.js:16:19)
    at repl:1:1
    at REPLServer.defaultEval (repl.js:269:27)
    at bound (domain.js:287:14)
    at REPLServer.runBound [as eval] (domain.js:300:12)
    at REPLServer.<anonymous> (repl.js:439:12)
    at emitOne (events.js:95:20)
> require('grunt-aws/tasks/aws')
[Function]

[ccorcos]

new release?