* Update HUB banner image Passed through tinypng for filesize reduction Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com> * Update README_cn.md Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com> * Update README_cn.md Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com> Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>