chore: update readme with excludes

[sp71]

Description

• update readme with excludes argument

Links

• Exclude dirs in goimports recursive format #86
• feat: exclude files and dirs #115

Tests Required

• None added / updated as this change only impacts README

Breaking API Change?

• No

[codecov]

Codecov Report

Merging #131 (1cbe57e) into master (062693f) will not change coverage.
The diff coverage is n/a.

❗ Current head 1cbe57e differs from pull request most recent head d34944a. Consider uploading reports for the commit d34944a to get more accurate results

@@           Coverage Diff           @@
##           master     #131   +/-   ##
=======================================
  Coverage   90.06%   90.06%           
=======================================
  Files           8        8           
  Lines         624      624           
=======================================
  Hits          562      562           
  Misses         43       43           
  Partials       19       19           

Flag	Coverage Δ
unittests	90.06% <ø> (ø)

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[incu6us]

thanks for the PR, but I've updated README already