Changed tabs to four spaces to avoid different editors rendering the indentation differently
Changed tabs to four spaces to avoid different editors rendering the indentation differently

jtorresfabra/osg,scrawl/osg,marchelbling/osg,scrawl/osg,marchelbling/osg,marchelbling/osg,openscenegraph/osg,openscenegraph/osg,jtorresfabra/osg,jtorresfabra/osg,scrawl/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,openscenegraph/osg