added comment for msie regex
added comment for msie regex

OBSLabs/openvv,jdreetz/openvv,tpeace/set_openvv,advir1/openvv,tubemogul/openvv,advir1/openvv,OBSLabs/openvv,tpeace/set_openvv,jdreetz/openvv,tpeace/set_openvv,7thsky/openvv,tubemogul/openvv,advir1/openvv,7thsky/openvv,tubemogul/openvv,jdreetz/openvv,7thsky/openvv,OBSLabs/openvv