Update README.md

Update README.md

converting the rest of our application over to using contextAPI

updating our application to switch over from redux to context

removing redux-logger from production build

updating stripe integration and updating our favicon and title

updating with axios

updating code with stripe integration

moved our directory and shop data into its own reducer, created respective selectors and updated corresponding components with new redux flow for directory/shop

adding redux-persist to persist our cart reducer across sessions

added addItem and removeItem functionality to checkout item component

added clearItemFromCart action and bound it to remove in checkout-item

added checkout page, checkout item component and updated cart to use selectors from reselect

updating our application with reselect, replaced cart selectors with memoized selectors

created cart-item component and connected our cart dropdown with cartItems reducer