Update USAGE.md

[gaurav61]

No description provided.

[codecov-io]

Codecov Report

Merging #432 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #432   +/-   ##
=======================================
  Coverage   81.98%   81.98%           
=======================================
  Files           9        9           
  Lines         999      999           
  Branches      160      160           
=======================================
  Hits          819      819           
  Misses         90       90           
  Partials       90       90

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[thinkingserious]

Hello @gaurav61,

Thanks again for the PR!

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Team SendGrid DX