AVC_2014.ino
1. added a flashing LED at the beginning to indicate that sketch has been uploaded and the MCU is ready
2. added FIFO reset

DECLARATIONS.h
1. added the FIFO reset function

GYRO.cpp
1. added the FIFO reset function

fail_safe.ino
1. added LED_BUILTIN to flash the LED

Signed-off-by: rkburnside <richard@burnsides.org>