support multi pasori devices.
minor change of visualization effect.
fix corrupted onStartUp messages, add timeout settings.
refactoring, add heartBeat feature.
refactoring
refactoring.
refactoring.
implement demo of adminConsoleRotation
implement adminConsoleRotation progress.
bug fix: duplicateed entry in var/*.csv.txt file
Merge branch 'multi_pasori'
enable automatic attendee grouping.
Merge branch 'master' of https://github.com/kubohiroya/studentIDReader.js

Conflicts:
	README.md