HMI: Update HMI README to reflect code changes.
HMI: Update HMI README to reflect code changes.

fy2462/apollo,startcode/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,fy2462/apollo,fy2462/apollo