[etcd queue] Queue processor implementation (partially works for delete

This commit adds the queue processor that processes items added to a
FIFO queue.

*	new file:   queueProcessor/enqueueItem.js
- Enqueues an item to the queue at the rate of 1/5s

*	new file:   queueProcessor/queueProcessor.js
- Watches the queue and prints info about the item added. Deleting
  an item as it is received. However, some keys are skipped due to
  poor synchronization (still learning).