Fix deprecation warning on npm start

[gbowne1]

There is a message that quickly pops up when you try and run npm start in the root of the project..

It needs to be fixed. Haven't found very good information on how to fix this. Here's the message...

$ npm start

> gbowne1site_react@0.0.1 start
> react-scripts start

(node:22828) [DEP_WEBPACK_DEV_SERVER_ON_AFTER_SETUP_MIDDLEWARE] DeprecationWarning: 'onAfterSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.
(Use `node --trace-deprecation ...` to show where the warning was created)
(node:22828) [DEP_WEBPACK_DEV_SERVER_ON_BEFORE_SETUP_MIDDLEWARE] DeprecationWarning: 'onBeforeSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.