Revert "Sensor tag firmware"

This reverts commit df802b2d434db3963c2185d4e9ccf82e98226f94.
attempted to add in lower power...no more room
sleep timer and 'zero' header
auto and manual polling modes
Started rocket pack firmware

Initial start to firmware for MSP430FR5739 board
UART and clock initialization code
firmware + PCB update

Start of main firmware..mainly UART code
Update to PCB to move "command" line from radio pin 6 to 16.  Pin 6
enters command mode on boot, pin 16 enables binary command mode
(allowing the serial +++ handshake to be bypassed
Firmware updates

Added delay timing functionality
Started hashing out radio command/control
sensor updates

Fixed issue with magnetometer and gyro in tag firmware
Updated labview code to match
Decreased poll rate of barometer to half the main update rate.  Can hit
~20Hz with everything but humidity (with temp/pressure at 10Hz) and 15Hz
with everything (temp/press at 7 Hz).
Added README
Added License
Merging streamlined branch back to master