More work on serial communication, javadoc added
-added RXTX library for mac
-added inital javadoc generation

Coordinator.java:
-small code cleanups
-main loop now waits for io to be ready before continuing, should clear up 100% cpu usage

SerialConnection.java:
-beginning code cleanup
-now actually connects to a real port
-moving internal logging to use Log.d,e,w
-correctly identifies when data is being written or available to be read