Updated README to reflect current implementation
Handle Join Reply pre-transmission process
Added TODO file
Some doc and nits
Implemented equals() for Packet
Implemented test for Router w/ mock Sender and Receivers
Added test for forwarding JR. Fixed information sets
Added some documentation to the information sets
Added Eclipse settings to gitignore
Testing Router functions

- Add RevealingRouter subclass to test the information sets.
- Add information set tests in RouterTest + moved Router setup to instance (as
  opposed to class)
Implemented information base tests
Changed status of TODO in comment