Charting now working

I have added out-of-band charting functions to the code that will allow me to chart in GTK:DrawingAreas without having to trigger an event. 

It sounds simple, but apparently GTK::Draw is not really robust when it comes to just drawing a simple line. They prefer you create and event handler and have the event handler draw the line when the event is triggered. 

 Unfortunately, Unix, C++, RaspberryPi combination is the perfect storm for zero interactive grahping support.