Change Readme.md

[shashank76]

#721

[SendGridDX]

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[codecov]

Codecov Report

Merging #723 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #723      +/-   ##
==========================================
+ Coverage   85.03%   85.04%   +0.01%     
==========================================
  Files          35       35              
  Lines        1156     1157       +1     
  Branches      172      172              
==========================================
+ Hits          983      984       +1     
  Misses         90       90              
  Partials       83       83

Impacted Files	Coverage Δ
sendgrid/helpers/mail/validators.py	44.44% <0%> (ø)	⬆️
sendgrid/helpers/mail/exceptions.py	66.66% <0%> (ø)	⬆️
sendgrid/helpers/inbound/send.py	93.75% <0%> (ø)	⬆️
sendgrid/helpers/mail/content.py	84.61% <0%> (ø)	⬆️
sendgrid/helpers/inbound/config.py	97.05% <0%> (+0.08%)	⬆️

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[thinkingserious]

Duplicate of #722