Update readme & add check help

[joelee2012]

No description provided.

[codecov]

Codecov Report

Merging #2 (f5d1edf) into main (1249c08) will increase coverage by 0.28%.
The diff coverage is 91.66%.

❗ Current head f5d1edf differs from pull request most recent head 503bcba. Consider uploading reports for the commit 503bcba to get more accurate results

@@            Coverage Diff             @@
##             main       #2      +/-   ##
==========================================
+ Coverage   90.62%   90.90%   +0.28%     
==========================================
  Files           1        1              
  Lines          64       66       +2     
==========================================
+ Hits           58       60       +2     
  Misses          6        6              

Files Changed	Coverage Δ
skustomize	90.90% <91.66%> (+0.28%)	⬆️

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