created directory structure for each worker

Each worker only manipulates files in its personal directory
worker directory

seemed niot to take
Updated master on new files

When worker receives a file, he sends Master his updated file listings
Added WorkerP2P code
TODO: change workerP2P ports to not use random, and commuincate master
about it
Added file transfer from client to worker
Merge pull request #3 from chandanRIT/master

Added WorkerP2P code
recent changes