Added light source.
Added light source.


artoolkit/osg,jtorresfabra/osg,openscenegraph/osg,artoolkit/osg,scrawl/osg,marchelbling/osg,openscenegraph/osg,marchelbling/osg,tomasthoresen/osg,jtorresfabra/osg,tomasthoresen/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,tomasthoresen/osg,openscenegraph/osg,scrawl/osg,artoolkit/osg,marchelbling/osg,openscenegraph/osg,jtorresfabra/osg,tomasthoresen/osg,artoolkit/osg,scrawl/osg