add convenience method to compute a stored posture plan
add convenience method to compute a stored posture plan

openhumanoids/director,openhumanoids/director,manuelli/director,openhumanoids/director,manuelli/director,manuelli/director,patmarion/director,manuelli/director,mitdrc/director,patmarion/director,openhumanoids/director,mitdrc/director,patmarion/director,openhumanoids/director,mitdrc/director,manuelli/director,mitdrc/director,patmarion/director,mitdrc/director,patmarion/director