Fixed some issue of readme and added violin_box function (#714)

[Starlitnightly]

No description provided.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 15.55556% with 38 lines in your changes missing coverage. Please review.

Project coverage is 37.64%. Comparing base (c181381) to head (26a0ebf).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
dynamo/plot/violin_box.py	13.63%	38 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #715      +/-   ##
==========================================
- Coverage   37.67%   37.64%   -0.03%     
==========================================
  Files         177      178       +1     
  Lines       33946    33991      +45     
==========================================
+ Hits        12788    12795       +7     
- Misses      21158    21196      +38     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.