Scheduler

It's a half done pull request, need some feedback to improvement the code. It's aim to schedule the user configured task resource requests.
Mainly done: 
1. move the package into cluster
2. package workerInfo( Todo: using host:port)
3. parse the configuration into task arrangement


The actor path name is the worker Id.

val workerId = actor.path.name
if (resources.contains(workerId)) {
  resource -= actor
]