Add getpos method to return graphical robot state.
Add getpos method to return graphical robot state.


jaejunlee0538/robotics-toolbox-matlab,yasha0b1/robotics-toolbox-matlab,konradb3/robotics-toolbox-matlab,konradb3/robotics-toolbox-matlab,jaejunlee0538/robotics-toolbox-matlab,yasha0b1/robotics-toolbox-matlab,konradb3/robotics-toolbox-matlab,yasha0b1/robotics-toolbox-matlab,konradb3/robotics-toolbox-matlab,konradb3/robotics-toolbox-matlab,yasha0b1/robotics-toolbox-matlab,jaejunlee0538/robotics-toolbox-matlab,jaejunlee0538/robotics-toolbox-matlab,yasha0b1/robotics-toolbox-matlab,jaejunlee0538/robotics-toolbox-matlab