* feat: add rtmp support

* Update detect.py

pass tuple to source.startswith()

Co-authored-by: ryan.fu <ryan.fu@aylaasia.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* initial commit

* remove yolov3-spp from test.py study

* update study --img range

* update mAP

* cleanup and speed updates

* update README plot

* the value should be a list to unpacking

* filter the None labels

* update readme to remove apex dependency

* Update README.md, deploy model with tensorrt

* Update README.md

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Add link to multi-gpu train tutorial

* Update README.md

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>