Update to version 0.2.7 - Added Parsing Functionality

The program now has the ability to parse NMEA strings from the serial port.
Also added:

 - Error checking for parsing
 - Ability to send commands back to the balloon with a command file
 - Error messages standardized

Remaining tasks:

 - Verifying data packet contents
 - Default file to speed up start time
 - Parsing otherr data from the balloon