updated skeleton

Signed-off-by: Michael Diener <dm.menthos@gmail.com>
added unkown command error upon supporting no argument to grace

Signed-off-by: Michael Diener <dm.menthos@gmail.com>
added exit program directive upon error on initialization of task class

Signed-off-by: Michael Diener <dm.menthos@gmail.com>
updated github readme

Signed-off-by: Michael Diener <dm.menthos@gmail.com>