removed log files and bin directory to decrease clutter
removed redundant log4j
reformatting, moved rxtxSerial
refactored Main.java to XBeeListenerGui
restructured XBeeListenerGui.java to no longer be static
removed redundant xbee-api-0.9.jar
code optimizations - address array, misc
commented gui constructor
method documentation, more optimizations
removed unnecessary functions in XBeeListenerGui