Update README.md

[Fatman13]

关联的Issues (Related Issues)

添加 Logo。

改动 (Proposed Changes)

附注 (Additional Info)

自查清单 (Checklist)

在你认为本 PR 满足被审阅的标准之前，需要确保 / Before you mark the PR ready for review, please make sure that:

• 符合Venus项目管理规范中关于PR的相关标准 / The PR follows the PR standards set out in the Venus project management guidelines
• 具有清晰明确的commit message / All commits have a clear commit message.
• 包含相关的的测试用例或者不需要新增测试用例 / This PR has tests for new functionality or change in behaviour or not need to add new tests.
• 包含相关的的指南以及文档或者不需要新增文档 / This PR has updated usage guidelines and documentation or not need
• 通过必要的检查项 / All checks are green

[codecov-commenter]

Codecov Report

Merging #202 (3109ce8) into master (1400a89) will not change coverage.
The diff coverage is n/a.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #202   +/-   ##
=======================================
  Coverage   31.43%   31.43%           
=======================================
  Files          58       58           
  Lines        3977     3977           
=======================================
  Hits         1250     1250           
  Misses       2572     2572           
  Partials      155      155           

Flag	Coverage Δ
unittests	31.27% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[diwufeiwen]

LGTM