stripe API reference

reference:
https://www.youtube.com/watch?v=QT3_zT97_1g
https://www.youtube.com/watch?v=u2kbKh98MF0
https://stripe.com/docs/checkout
https://www.npmjs.com/package/stripe
https://stripe.com/docs/recipes/elements-react
https://stripe.com/docs/api#capture_charge

https://teamtreehouse.com/community/appuseexpressstatic-dirname-public-the-same-syntax-as-in-videobut-this-is-wrong-answer-for-this-question
https://kapeli.com/cheat_sheets/Axios.docset/Contents/Resources/Documents/index
https://stackoverflow.com/questions/5722919/jquery-convert-number-to-date
https://stackoverflow.com/questions/10744305/how-to-create-gitignore-file
https://stackoverflow.com/questions/5129598/how-to-link-a-folder-with-an-existing-heroku-app