* add livestream promotion info

* Update README_cn.md

* Update README_cn.md

* Update README.md

* Create README.md

* Update README_en.md

* support rcnn bs=2 in cpp infer

* check dynamic shape in padbatch

* replace fluid by paddle

* fix time display in pptracking cpp

* fix timer in bs=2

* fix plot_tracking_dict, test=document_fix

* add mot jde api for pptracking, test=document_fix

* fix timer in deploy

* fix mot_keypoint deploy

* fix plot_tracking_dict, test=document_fix

* fix xpu deploy infer enable_lite_engine, test=document_fix

* update pptracking and mot doc, test=document_fix

* update docs, test=document_fix

* fix notes, test=document_fix

* fix label_list for mot, add warnings

* add result txt format, test=document_fix

* fix readme of mtmct, fix paddle.disable_static, test=document_fix

* fix cfg, test=document_fix

* remove paddle api

* update doc

* update doc