doc: update help message for update

feature: output yaml style message when show command

fix: update if name already exsits instead of deleting it

Merge branch 'master' of github.com:omuomugin/labelit

fix: update if name already exsits instead of deleting it

doc: add about package manager support

doc: add LICENSE.md

doc: fix typo

Update README.md

doc: update how to use and other techinical things

refactor: cosmetic changes for message and typos

refactor: cosmetic changes like package and styles

feat: add event handler and print events

feat: enable error handling

refactor: use deffered and awaitAll