Allow VisualizerGUI to run if it is invoked directly, just to check OpenGL and display the About message.
Allow VisualizerGUI to run if it is invoked directly, just to check OpenGL and display the About message.

Gjacquenot/simbody,robojukie/simbody,robojukie/simbody,simbody/simbody,chrisdembia/simbody,robojukie/simbody,Gjacquenot/simbody,chrisdembia/simbody,elkingtonmcb/simbody,scamille/simbody,elen4/simbody,elkingtonmcb/simbody,scamille/simbody,elen4/simbody,elkingtonmcb/simbody,chrisdembia/simbody,Gjacquenot/simbody,scamille/simbody,simbody/simbody