Stripe Integration using React and Express DEMO.
Create ".env" file in root directory with a variables called "STRIPE_SECRET_KEY" set to your stripe secret key
Additionally Create ".env" file in the client directory with a variables called "REACT_APP_STRIPE_KEY" set to your stripe publishable key
For Detailed Intructions, checkout this video: https://www.youtube.com/watch?v=Z8bCWjg87Ek