Updated CONTRIBUTING to reference new Git workflow
Updated CONTRIBUTING to reference new Git workflow

yunfanye/Autolab,autolab/Autolab,cg2v/Autolab,AEgan/Autolab,autolab/Autolab,autolab/Autolab,AEgan/Autolab,autolab/Autolab,yunfanye/Autolab,cg2v/Autolab,yunfanye/Autolab,AEgan/Autolab,autolab/Autolab,AEgan/Autolab,autolab/Autolab,cg2v/Autolab,AEgan/Autolab,AEgan/Autolab,cg2v/Autolab,yunfanye/Autolab,cg2v/Autolab,yunfanye/Autolab,yunfanye/Autolab,cg2v/Autolab