Changed compensation offset's deltaYaw to currentYaw
Implemented alert system for nodes down
Changed SVProgressHUD's hud sizes for different usages
Removed systemDownAlert
1. Fixed LEFT-RIGHT compensation +90 degree extra problem
2. System now able to detect master node down or master node up
STARS Patient Setup's UI in StartUpViewController is done
1. Added missing videos
2. StartUp (Reminder System), WiFi stage complete
Fixed compensation nature