Added matrix and simple vertex shader paths.
Added matrix and simple vertex shader paths.


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