Read Voltage support

Added support to read the voltage from designated analog pin A0
Refined Voltage Read Support

Fixed issues. Now the function returns and ACTUALLY SENDS THE DATA.
Moar hax

added a global state variable for battery voltage
Merge pull request #101 from CMU-Robotics-Club/vrbahl_batteryRead

Voltage Read Support
Create testReadSensorLog.m
Added
update voltage divider equation and add support to serial console
correct pin definition for voltage reading
remap signal numbers and pins for new controller layout
handled merge conflicts. has compilation errors.