Added more to explanation of GyroBase::getGyroLSBsPerUnit() ; added note about GyroBase class only supporting digital gyros at this time
Added comment describing how to use analog gyros with the GyroBase class
Added implementation of Kalman Filter with KOP gyro and accelerometer
Added libatomic.c to fix undefined symbols upon linkage with C++ standard library ; simplified analog gyro Kalman filter impl by using oversampling provided by AnalogModule class