Needs a helper to load in Payload etc from within a worker

[treeder]

Reading the -payload, -id, -config etc for easy usage rather than having user's build it themselves.

[pyeremenko]

@treeder, how do you see this?

I think it should be io.iron.ironworker.client.helpers.WorkerParameters class which accepts String[] and provides the following getters:

• String getDirectoryName()
• String getEnvironment()
• String getTaskId()
• com.google.gson.JsonObject getPayload()
• T getPayload(java.lang.Class classOfT)

cc @edsrzf

[treeder]

It should be like this: https://github.com/iron-io/iron_go/blob/master/worker/remote.go or this: https://github.com/iron-io/iron_worker_ruby/blob/master/lib/iron_worker/worker_helper.rb

Preferably user could just call something like:

String payload  = WorkerHelper.getPayload()
JsonObject payload = WorkerHelper.getPayloadJSON()
etc....

[pyeremenko]

@treeder, please, look at this PR #17

[pyeremenko]

Also I changed iron_worker_examples https://github.com/iron-io/iron_worker_examples/pull/100