Added google-gson jars. Added google-gson to .classpath. Does not work on Didit
Organized code into packages for better readability. Change inner type of the usernames list in Server
Added a request blocking queue to the server. Added marker interfaces for requests and responses
Added design milestone 2 document
Merge branch 'master' of ssh://athena.dialup.mit.edu/afs/athena.mit.edu/course/6/6.005/git/sp13/projects/guichat/alvarom-aybose-holliman
Added JSON serialization adapter. Began working on user authentication. Code is commented out for TA meeting demo
Recreated the main package and added the client and server classes to it. This is because the project page states Running main.Client.main() with no command-line arguments must start an instance of your GUI chat client. and that Running main.Server.main() with no command-line arguments must start an instance of your chat server.