Wrapped up design for AIS, added testing code
Finished up AIS design, just needs to be tested. Refactored serial.cpp to have ability to set baud rate. Changed its dependencies appropriately
Merge pull request #25 from rkevingibson/master

Finishing up AIS, and reworked the Serial class to allow for customization of Baud rate, in order to support the satellite transceiver and AIS.