Merge pull request #32 from t32k/dev

Support output HTML, CLI option #31
Bump v2.3.0
Update readme.md
Update readme.md
Merge pull request #34 from t32k/dev

Dev
Merge branch 'dev'

* dev:
  fix variable name
  add comments
  remove duplicated variable
  refactoring
  fix comments
  add analyze function
add comments
Merge pull request #38 from 1000ch/master

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Merge pull request #39 from t32k/dev

Dev