Add yolort logo (#106)

* Add yolort logo

* Updating the order

README.md

@@ -1,4 +1,8 @@
-# 🔦 yolort - YOLOv5 Runtime Stack
+<div align="center">
+
+<img src="docs/source/_static/yolort_logo.png" width="400px">
+
+**YOLOv5 Runtime Stack**
 
 [![CI testing](https://github.com/zhiqwang/yolov5-rt-stack/workflows/CI%20testing/badge.svg)](https://github.com/zhiqwang/yolov5-rt-stack/actions?query=workflow%3A%22CI+testing%22)
 [![codecov](https://codecov.io/gh/zhiqwang/yolov5-rt-stack/branch/master/graph/badge.svg?token=1GX96EA72Y)](https://codecov.io/gh/zhiqwang/yolov5-rt-stack)
@@ -7,6 +11,10 @@
 [![Github downloads](https://img.shields.io/github/downloads/zhiqwang/yolov5-rt-stack/total?color=blue&label=downloads&logo=github&logoColor=lightgrey)](https://img.shields.io/github/downloads/zhiqwang/yolov5-rt-stack/total?color=blue&label=Downloads&logo=github&logoColor=lightgrey)
 [![Slack](https://img.shields.io/badge/slack-chat-green.svg?logo=slack)](https://join.slack.com/t/yolort/shared_invite/zt-mqwc7235-940aAh8IaKYeWclrJx10SA)
 
+---
+
+</div>
+
 **What it is.** Yet another implementation of Ultralytics's [YOLOv5](https://github.com/ultralytics/yolov5), and with modules refactoring to adapt to different deployment scenarios such as `libtorch`, `onnxruntime`, `tvm` and so on.
 
 **About the code.** Follow the design principle of [detr](https://github.com/facebookresearch/detr):

docs/source/conf.py

@@ -91,7 +91,7 @@
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-html_logo = '_static/rt-logo.png'
+html_logo = '_static/rt_logo.png'
 
 html_static_path = ['_static']