Added some docs on command line options.
Added some docs on command line options.


git-svn-id: 23b6355f2bb369032457de4eb5f713ee134f73a8@4720 16af8721-9629-0410-8352-f15c8da7e697

joevandyk/osg,joevandyk/osg,joevandyk/osg,joevandyk/osg,joevandyk/osg