Added copyright + fixed typo
Added copyright + fixed typo


XiaoCC/osg,ghub/osg,ntoand/osg,omega-hub/osg,ntoand/osg,ghub/osg,omega-hub/osg,stmh/osg,koshman86/osg,ntoand/osg,ntoand/osg,artoolkit/osg,XiaoCC/osg,artoolkit/osg,ghub/osg,ghub/osg,stmh/osg,artoolkit/osg,artoolkit/osg,stmh/osg,koshman86/osg,omega-hub/osg,XiaoCC/osg,omega-hub/osg,stmh/osg,XiaoCC/osg,stmh/osg,koshman86/osg,XiaoCC/osg,koshman86/osg